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20 Best Email MCP Servers, Compared (August 2026)

Updated 20 of 1,989 Email servers in the Glama registryRebuilt weekly

The short answer

Readers should start with Google Workspace MCP Server: it exposes 122 tools covering Gmail, Calendar, and Drive, it had a commit 2 days ago, and it has 380 commits in the last 12 weeks. That combination of breadth and current maintenance makes it the best default for most Google Workspace users. A different job is when you already use Resend and your whole need is sending email: Email Sending MCP has 91 tools, a commit 0 days ago, and 12,852 downloads in a typical week. If your email is in Apple Mail on macOS, apple-mail-mcp is the stronger local option with 50 tools and a commit 1 day ago.

Whichever you choose, give it the narrowest access that still works — a read-only credential, a replica, a scratch account — and widen it only once you have watched what your agent actually asks for.

Glama operates the MCP registry these numbers are measured from, and sells MCP hosting and a gateway. No position on this page is paid for. How the registry is built.

Quick picks

  • 1Google Workspace MCP Server - Control Gmail, Calendar, Docs, Sheets, Slides, Chat, Forms & Drive — Teams managing Gmail plus Calendar and Drive from one MCP server — it exposes 122 tools spanning email, calendar, and Drive.
  • 2Email Sending MCP — Resend customers who need an MCP server for sending email and managing contacts, broadcasts, automations, and domains from an AI assistant.
  • 3apple-mail-mcp — Managing Apple Mail on macOS from an AI assistant — it exposes send, search, draft, reply, forward, and mailbox tools via AppleScript.
  • 4MCP Agent Mail — Coordinating multiple coding agents on shared codebases — provides identities, inbox/outbox, and advisory file leases to prevent conflicts.
  • 5MCP Email Server — When you need one MCP server for both IMAP reading and SMTP sending, this one offers 14 tools including attachment handling and draft saving.

Which one, for your situation

Your situationWhat to use
I use Google Workspace and want email, calendar, and Drive together.Use Google Workspace MCP Server: it exposes 122 tools for Gmail, Calendar, and Drive, and had a commit 2 days ago.
I have a Resend account and mostly need to send email.Use Email Sending MCP: it is built for Resend's API, exposes 91 tools, and had a commit 0 days ago.
I use Apple Mail on macOS and want a native option.Use apple-mail-mcp: it drives Apple Mail through AppleScript with 50 tools and 267 commits in the last 12 weeks.
I need a general IMAP/SMTP server for multiple accounts.Use IMAP MCP Server: it exposes 40 IMAP/SMTP tools and had a commit 15 days ago.
I need Microsoft 365 mail, calendar, Excel, and OneDrive.Use Microsoft 365 MCP Server: it exposes 188 tools for those services through the Graph API and had a commit 1 day ago.
I use Postmark and want delivery statistics.Use Postmark MCP Server: it is built for Postmark sending, templates, and delivery statistics.

Top MCP servers for Email

Best forProfile
1
taylorwilsdon/google_workspace_mcp
Teams managing Gmail plus Calendar and Drive from one MCP server — it exposes 122 tools spanning email, calendar, and Drive.Community favourite3,037+1572 days ago88.7
2
resend/resend-mcp
Resend customers who need an MCP server for sending email and managing contacts, broadcasts, automations, and domains from an AI assistant.Community favourite559+7today87.4
3
sweetrb/apple-mail-mcp
Managing Apple Mail on macOS from an AI assistant — it exposes send, search, draft, reply, forward, and mailbox tools via AppleScript.Community favourite62+11yesterday85.5
4
Dicklesworthstone/mcp_agent_mail
Coordinating multiple coding agents on shared codebases — provides identities, inbox/outbox, and advisory file leases to prevent conflicts.Community favourite2,095+673 days ago85.1
5
Wh1isper/mcp-email-server
When you need one MCP server for both IMAP reading and SMTP sending, this one offers 14 tools including attachment handling and draft saving.Community favourite307+2812 days ago81.4
6
patrickfreyer/apple-mail-mcp
AI assistants on macOS that need full access to Apple Mail — natural language reading, searching, composing, organizing, and analyzing of email.Emerging193+2316 days ago78.5
7
agenticmail/agenticmail
AI agents needing real email and disposable inboxes — it provides local send, receive, search, and inbox management without a third-party email API.Emerging192+2423 days ago75.8
8
ArtyMcLabin/Gmail-MCP-Server
A local Claude Code Gmail workflow — the OAuth refresh token persists across restarts, ending the hourly re-auth loop.Emerging226+178 days ago75.8
9
Softeria/ms-365-mcp-server
Administering Microsoft 365 from a chat — it maps tools 1:1 to Graph API endpoints for mail, Excel, OneDrive, and Teams.Community favourite921+57yesterday72.9
10
ActiveCampaign/postmark-mcp
Postmark customers who want email sending, template management, and delivery diagnostics through an MCP client — it exposes those Postmark operations directly.Community favourite54+937 days ago71.5
11
yunfeizhu/mcp-mail-server
Email workflow automation inside Cursor or Claude — it connects to IMAP/SMTP accounts and handles search, read, send, reply, and attachment tasks via natural language.Steady45+1yesterday70.0
12
TKasperczyk/thunderbird-mcp
Thunderbird users who want an AI assistant to read, search and draft mail locally, with compose and folder tools via a localhost bridge.Community favourite264+3937 days ago69.0
13
OpenOSINT/OpenOSINT
Investigating a person, email, domain, IP, or phone from a chat prompt — its autonomous agent chains 20 OSINT tools and writes a report.Community favourite1,392+391today68.6
14
ryaker/outlook-mcp
Managing Microsoft 365 email, calendar, files, and flows from Claude — it exposes dedicated tools for each service.Abandoned but popular423+21143 days ago66.2
15
Atomic-Mail/atomic-mail-agentic
Autonomous agents needing a self-created email inbox — it handles registration, reading, and sending via JMAP with proof-of-work signup.Community favourite269-529 days ago66.1
16
mailgun/mailgun-mcp-server
Mailgun users who want an AI assistant to send email and review delivery stats — messaging and analytics tools cover it.Community favourite57+227 days ago65.7
17
codefuturist/email-mcp
For AI assistants that must handle the full email lifecycle across multiple accounts — it exposes scheduling, triage, analytics, and calendar extraction tools.Abandoned but popular89+1892 days ago65.5
18
anypost/emailmd
Drafting email campaigns in markdown that must render correctly in Outlook and Gmail — it converts markdown to email-safe HTML and lints deliverability.Community favourite1,302+214 days ago64.9
19
littlebearapps/outlook-assistant
For managing Outlook email, calendar, and contacts from an AI assistant — this server's 22 Graph API tools cover all of those workflows.Emerging33+819 days ago64.7
20
nikolausm/imap-mcp-server
Managing one or more email accounts with an AI assistant — it provides 40 IMAP/SMTP tools for send, search, reply, folders, flags, and spam.Emerging74+2015 days ago63.4

The ranking, with the evidence

Each position is a weighted mean of adoption (40%), maintenance (24%), momentum (14%), tool description quality (13%) and trust (9%), multiplied by three attenuators: how directly the server is about Email — named for it, declaring it, tagged with it, or merely mentioning it — whether its repository is still moving, and how much independent evidence of adoption it has. Open the score on any entry to see every number, including the ones marked ≈, which were imputed from the median of the other candidates rather than measured. The maintenance grade on each entry is mostly issue responsiveness, release recency and open security alerts rather than commits, so a recent commit beside a low grade is two different measurements rather than a contradiction.

  • Abandoned but popular — People use it, but its default branch has stopped moving. Fine to keep running, risky to adopt.
  • Community favourite — Widely adopted and still actively maintained.
  • Dormant — Neither changing nor widely adopted. Here because it still matches the search.
  • Emerging — Small audience, growing quickly, maintained. The bet with the most upside.
  • Steady — Maintained, modest audience, no surprises in either direction.
  • 1

    Google Workspace MCP Server - Control Gmail, Calendar, Docs, Sheets, Slides, Chat, Forms & Drive

    Community favourite
    taylorwilsdon/google_workspace_mcp ↗

    Best for: Teams managing Gmail plus Calendar and Drive from one MCP server — it exposes 122 tools spanning email, calendar, and Drive.

    It exposes 122 tools for Gmail, Calendar, Drive, Docs, and more, covering message search, send, drafts, labels, calendar events, and file operations. It requires configuring a Google Cloud OAuth client and scopes in a GCP project.

    GitHub stars
    3,037
    Stars over the last 90 days: 2,592 at the earliest of 20 readings and 3,037 at the latest, up 445.
    Stars / 30 days
    +157
    npm / typical week
    Ships no npm package
    Tools exposed
    122
    Last commit
    2 days ago
    Commits / 12 weeks
    380
    Weekly commits over the last 12 weeks, oldest first: 30, 8, 33, 54, 8, 21, 4, 11, 62, 59, 22, 68. 380 in total, and the last figure is the current week so far.
    Maintenance grade
    A
    Tool descriptions
    B
    Score 88.7 — show every number behind it
    • Adoption87 / 100 · weight 40%
      • GitHub stars87
      • npm downloadsnot measured
        no npm package
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance100 / 100 · weight 24%
      • Last commit touching this server100
      • Repository maintenance grade100
      • Commit cadence100
    • Momentum91 / 100 · weight 14%
      • Stars gained, relative to size92
      • Stars gained, absolute89
      • npm download trendnot measured
        no npm download history
    • Tool quality63 / 100 · weight 13%
      • Tool description quality55
      • Built and inspected by Glama100
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integratesnot measured
        not published by the vendor it integrates
    Weighted mean of the five
    88.7
    × relevance — the keyword is dedicated here
    1.00
    × continuity — actively changing
    1.00
    × evidence — widely adopted
    1.00
    Composite score
    88.7
  • 2

    Email Sending MCP

    Community favourite
    resend/resend-mcp ↗

    Best for: Resend customers who need an MCP server for sending email and managing contacts, broadcasts, automations, and domains from an AI assistant.

    It exposes 91 tools covering Resend contacts, segments, topics, broadcasts, automations, domains, API keys, and editor presence, and documents both a hosted remote MCP server and a local npx package over stdio or HTTP. Local use requires a Resend API key and a verified domain, and its removal tools require the agent to double-check with the user before acting.

    GitHub stars
    559
    Stars over the last 90 days: 512 at the earliest of 34 readings and 559 at the latest, up 47.
    Stars / 30 days
    +7
    npm / typical week
    12.9K
    Tools exposed
    91
    Last commit
    today
    Commits / 12 weeks
    36
    Weekly commits over the last 12 weeks, oldest first: 8, 1, 0, 0, 5, 2, 4, 7, 2, 2, 3, 2. 36 in total, and the last figure is the current week so far.
    Maintenance grade
    A
    Tool descriptions
    A
    Score 87.4 — show every number behind it
    • Adoption98 / 100 · weight 40%
      • GitHub stars69
      • npm downloads87
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance100 / 100 · weight 24%
      • Last commit touching this server100
      • Repository maintenance grade100
      • Commit cadence100
    • Momentum41 / 100 · weight 14%
      • Stars gained, relative to size41
      • Stars gained, absolute37
      • npm download trend46
    • Tool quality73 / 100 · weight 13%
      • Tool description quality65
      • Built and inspected by Glama100
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integratesnot measured
        not published by the vendor it integrates
    Weighted mean of the five
    87.4
    × relevance — the keyword is dedicated here
    1.00
    × continuity — actively changing
    1.00
    × evidence — widely adopted
    1.00
    Composite score
    87.4
  • 3

    apple-mail-mcp

    Community favourite
    sweetrb/apple-mail-mcp ↗

    Best for: Managing Apple Mail on macOS from an AI assistant — it exposes send, search, draft, reply, forward, and mailbox tools via AppleScript.

    This npm server exposes 50 tools for reading, searching, sending, drafting, replying to, forwarding, organizing, and deleting Apple Mail messages through local AppleScript. It requires macOS with Mail.app, and the optional IMAP/SMTP features require one-time setup.

    GitHub stars
    62
    Stars over the last 90 days: 29 at the earliest of 28 readings and 62 at the latest, up 33.
    Stars / 30 days
    +11
    npm / typical week
    1.3K
    Tools exposed
    50
    Last commit
    yesterday
    Commits / 12 weeks
    267
    Weekly commits over the last 12 weeks, oldest first: 12, 0, 7, 114, 29, 6, 9, 21, 6, 17, 9, 37. 267 in total, and the last figure is the current week so far.
    Maintenance grade
    A
    Tool descriptions
    A
    Score 85.5 — show every number behind it
    • Adoption73 / 100 · weight 40%
      • GitHub stars45
      • npm downloads66
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance100 / 100 · weight 24%
      • Last commit touching this server100
      • Repository maintenance grade100
      • Commit cadence100
    • Momentum82 / 100 · weight 14%
      • Stars gained, relative to size97
      • Stars gained, absolute44
      • npm download trend100
    • Tool quality91 / 100 · weight 13%
      • Tool description quality83
      • Built and inspected by Glama100
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integratesnot measured
        not published by the vendor it integrates
    Weighted mean of the five
    85.5
    × relevance — the keyword is dedicated here
    1.00
    × continuity — actively changing
    1.00
    × evidence — widely adopted
    1.00
    Composite score
    85.5
  • 4

    MCP Agent Mail

    Community favourite
    Dicklesworthstone/mcp_agent_mail ↗

    Best for: Coordinating multiple coding agents on shared codebases — provides identities, inbox/outbox, and advisory file leases to prevent conflicts.

    The server exposes an HTTP-only FastMCP interface with Git-backed messaging, searchable history, and voluntary file reservations, using SQLite for indexing. It requires the provided installer to set up a Python 3.14 environment and also installs Beads Rust and Beads Viewer unless explicitly skipped.

    GitHub stars
    2,095
    Stars over the last 90 days: 1,957 at the earliest of 15 readings and 2,095 at the latest, up 138.
    Stars / 30 days
    +67
    npm / typical week
    Ships no npm package
    Tools exposed
    never inspected
    Last commit
    3 days ago
    Commits / 12 weeks
    32
    Weekly commits over the last 12 weeks, oldest first: 6, 14, 2, 1, 1, 0, 0, 1, 0, 2, 0, 5. 32 in total, and the last figure is the current week so far.
    Maintenance grade
    A
    Tool descriptions
    Not graded
    Score 85.1 — show every number behind it
    • Adoption83 / 100 · weight 40%
      • GitHub stars83
      • npm downloadsnot measured
        no npm package
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance100 / 100 · weight 24%
      • Last commit touching this server100
      • Repository maintenance grade100
      • Commit cadence100
    • Momentum72 / 100 · weight 14%
      • Stars gained, relative to size71
      • Stars gained, absolute74
      • npm download trendnot measured
        no npm download history
    • Tool quality≈68 / 100 · weight 13%
      • Tool description quality≈68
        tool descriptions not yet scored
      • Built and inspected by Glamanot measured
        never built and inspected by Glama
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integratesnot measured
        not published by the vendor it integrates
    Weighted mean of the five
    85.1
    × relevance — the keyword is dedicated here
    1.00
    × continuity — actively changing
    1.00
    × evidence — widely adopted
    1.00
    Composite score
    85.1
  • 5

    MCP Email Server

    Community favourite
    Wh1isper/mcp-email-server ↗

    Best for: When you need one MCP server for both IMAP reading and SMTP sending, this one offers 14 tools including attachment handling and draft saving.

    It exposes 14 tools for IMAP/SMTP email management, covering account listing, metadata retrieval, content fetch, sending, flagging, moving, deleting, and attachment downloads. Be aware that first-run setup requires a local configuration UI and that sending is restricted by a recipient allowlist you must populate in advance.

    GitHub stars
    307
    Stars over the last 90 days: 238 at the earliest of 22 readings and 307 at the latest, up 69.
    Stars / 30 days
    +28
    npm / typical week
    Ships no npm package
    Tools exposed
    14
    Last commit
    12 days ago
    Commits / 12 weeks
    55
    Weekly commits over the last 12 weeks, oldest first: 2, 13, 2, 2, 0, 6, 5, 4, 6, 2, 7, 6. 55 in total, and the last figure is the current week so far.
    Maintenance grade
    A
    Tool descriptions
    A
    Score 81.4 — show every number behind it
    • Adoption62 / 100 · weight 40%
      • GitHub stars62
      • npm downloadsnot measured
        no npm package
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance100 / 100 · weight 24%
      • Last commit touching this server100
      • Repository maintenance grade100
      • Commit cadence100
    • Momentum84 / 100 · weight 14%
      • Stars gained, relative to size100
      • Stars gained, absolute59
      • npm download trendnot measured
        no npm download history
    • Tool quality91 / 100 · weight 13%
      • Tool description quality83
      • Built and inspected by Glama100
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integratesnot measured
        not published by the vendor it integrates
    Weighted mean of the five
    81.4
    × relevance — the keyword is dedicated here
    1.00
    × continuity — actively changing
    1.00
    × evidence — widely adopted
    1.00
    Composite score
    81.4
  • 6

    Apple Mail MCP Server

    Emerging
    patrickfreyer/apple-mail-mcp ↗

    Best for: AI assistants on macOS that need full access to Apple Mail — natural language reading, searching, composing, organizing, and analyzing of email.

    The server exposes 26 tools to read, search, compose, organize, export, and analyze email through Apple Mail, including unified search, thread view, attachments, and an inbox dashboard. It requires macOS with an Apple Mail account already configured, and a read-only mode exists to disable sending tools for safety.

    GitHub stars
    193
    Stars over the last 90 days: 129 at the earliest of 9 readings and 193 at the latest, up 64.
    Stars / 30 days
    +23
    npm / typical week
    Ships no npm package
    Tools exposed
    26
    Last commit
    16 days ago
    Commits / 12 weeks
    34
    Weekly commits over the last 12 weeks, oldest first: 0, 3, 7, 8, 4, 3, 5, 0, 0, 0, 4, 0. 34 in total, and the last figure is the current week so far.
    Maintenance grade
    A
    Tool descriptions
    A
    Score 78.5 — show every number behind it
    • Adoption57 / 100 · weight 40%
      • GitHub stars57
      • npm downloadsnot measured
        no npm package
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance100 / 100 · weight 24%
      • Last commit touching this server100
      • Repository maintenance grade100
      • Commit cadence100
    • Momentum82 / 100 · weight 14%
      • Stars gained, relative to size100
      • Stars gained, absolute56
      • npm download trendnot measured
        no npm download history
    • Tool quality85 / 100 · weight 13%
      • Tool description quality77
      • Built and inspected by Glama100
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integratesnot measured
        not published by the vendor it integrates
    Weighted mean of the five
    78.5
    × relevance — the keyword is dedicated here
    1.00
    × continuity — actively changing
    1.00
    × evidence — widely adopted
    1.00
    Composite score
    78.5
  • 7

    AgenticMail

    Emerging
    agenticmail/agenticmail ↗

    Best for: AI agents needing real email and disposable inboxes — it provides local send, receive, search, and inbox management without a third-party email API.

    It runs a local mail server for AI agents, exposing send, receive, search, reply, forward, draft, scheduled, tag, contact, folder, and agent-account tools. Before choosing it, note that administrative setup (agent accounts, relay, custom domain) requires a master API key, and outbound internet email depends on a Gmail/Outlook relay or a Cloudflare domain.

    GitHub stars
    192
    Stars over the last 90 days: 129 at the earliest of 16 readings and 192 at the latest, up 63.
    Stars / 30 days
    +24
    npm / typical week
    Ships no npm package
    Tools exposed
    100
    Last commit
    23 days ago
    Commits / 12 weeks
    23
    Weekly commits over the last 12 weeks, oldest first: 3, 4, 7, 7, 0, 0, 0, 0, 0, 2, 0, 0. 23 in total, and the last figure is the current week so far.
    Maintenance grade
    A
    Tool descriptions
    A
    Score 75.8 — show every number behind it
    • Adoption57 / 100 · weight 40%
      • GitHub stars57
      • npm downloadsnot measured
        no npm package
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance97 / 100 · weight 24%
      • Last commit touching this server100
      • Repository maintenance grade100
      • Commit cadence85
    • Momentum82 / 100 · weight 14%
      • Stars gained, relative to size100
      • Stars gained, absolute56
      • npm download trendnot measured
        no npm download history
    • Tool quality71 / 100 · weight 13%
      • Tool description quality63
      • Built and inspected by Glama100
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integrates100
    Weighted mean of the five
    75.8
    × relevance — the keyword is dedicated here
    1.00
    × continuity — actively changing
    1.00
    × evidence — widely adopted
    1.00
    Composite score
    75.8
  • 8

    Gmail MCP Server (ArtyMcLabin fork)

    Emerging
    ArtyMcLabin/Gmail-MCP-Server ↗

    Best for: A local Claude Code Gmail workflow — the OAuth refresh token persists across restarts, ending the hourly re-auth loop.

    The server documents Gmail tools for threaded replies, attachment downloads, filter listing, draft lifecycle, and phishing reporting. It is a local stdio MCP server that uses Gmail OAuth with configurable scopes.

    GitHub stars
    226
    Stars / 30 days
    +17
    npm / typical week
    0
    Tools exposed
    never inspected
    Last commit
    8 days ago
    Commits / 12 weeks
    23
    Weekly commits over the last 12 weeks, oldest first: 1, 0, 0, 0, 1, 0, 19, 1, 0, 0, 0, 1. 23 in total, and the last figure is the current week so far.
    Maintenance grade
    A
    Tool descriptions
    Not graded
    Score 75.8 — show every number behind it
    • Adoption59 / 100 · weight 40%
      • GitHub stars59
      • npm downloads0
        downloads show none of the weekday rhythm human traffic has; halved
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance97 / 100 · weight 24%
      • Last commit touching this server100
      • Repository maintenance grade100
      • Commit cadence85
    • Momentum80 / 100 · weight 14%
      • Stars gained, relative to size89
      • Stars gained, absolute51
      • npm download trend99
    • Tool quality≈68 / 100 · weight 13%
      • Tool description quality≈68
        tool descriptions not yet scored
      • Built and inspected by Glamanot measured
        never built and inspected by Glama
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integratesnot measured
        not published by the vendor it integrates
    Weighted mean of the five
    75.8
    × relevance — the keyword is dedicated here
    1.00
    × continuity — actively changing
    1.00
    × evidence — widely adopted
    1.00
    Composite score
    75.8
  • 9

    Microsoft 365 MCP Server

    Community favourite
    Softeria/ms-365-mcp-server ↗

    Best for: Administering Microsoft 365 from a chat — it maps tools 1:1 to Graph API endpoints for mail, Excel, OneDrive, and Teams.

    The server exposes 188 tools that wrap Microsoft Graph endpoints for mail, calendar, OneDrive, Excel, and more, with output in JSON or experimental TOON format. Note that it requires Node.js, enables personal-account tools by default, and hides Teams and SharePoint tools behind the --org-mode flag.

    GitHub stars
    921
    Stars over the last 90 days: 729 at the earliest of 31 readings and 921 at the latest, up 192.
    Stars / 30 days
    +57
    npm / typical week
    21.2K
    Tools exposed
    188
    Last commit
    yesterday
    Commits / 12 weeks
    94
    Weekly commits over the last 12 weeks, oldest first: 1, 16, 10, 12, 1, 0, 8, 11, 12, 6, 10, 7. 94 in total, and the last figure is the current week so far.
    Maintenance grade
    A
    Tool descriptions
    B
    Score 72.9 — show every number behind it
    • Adoption100 / 100 · weight 40%
      • GitHub stars74
      • npm downloads92
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance100 / 100 · weight 24%
      • Last commit touching this server100
      • Repository maintenance grade100
      • Commit cadence100
    • Momentum90 / 100 · weight 14%
      • Stars gained, relative to size96
      • Stars gained, absolute71
      • npm download trend100
    • Tool quality61 / 100 · weight 13%
      • Tool description quality53
      • Built and inspected by Glama100
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integratesnot measured
        not published by the vendor it integrates
    Weighted mean of the five
    93.5
    × relevance — the keyword is declared here
    0.78
    × continuity — actively changing
    1.00
    × evidence — widely adopted
    1.00
    Composite score
    72.9
  • 10

    Postmark MCP Server

    Community favourite
    ActiveCampaign/postmark-mcp ↗

    Best for: Postmark customers who want email sending, template management, and delivery diagnostics through an MCP client — it exposes those Postmark operations directly.

    This server connects an MCP client to a Postmark account, exposing operations for sending single or batch emails, managing templates, searching messages, and viewing bounces, suppressions, stats, server info, and webhooks. It requires Node.js v20 or higher and a Postmark server token, plus default sender and message stream environment variables.

    GitHub stars
    54
    Stars over the last 90 days: 43 at the earliest of 15 readings and 54 at the latest, up 11.
    Stars / 30 days
    +9
    npm / typical week
    679
    Tools exposed
    never inspected
    Last commit
    37 days ago
    Commits / 12 weeks
    4
    Weekly commits over the last 12 weeks, oldest first: 0, 0, 1, 1, 1, 0, 0, 1, 0, 0, 0, 0. 4 in total, and the last figure is the current week so far.
    Maintenance grade
    C
    Tool descriptions
    Not graded
    Score 71.5 — show every number behind it
    • Adoption67 / 100 · weight 40%
      • GitHub stars44
      • npm downloads60
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance77 / 100 · weight 24%
      • Last commit touching this server100
      • Repository maintenance grade55
      • Commit cadence40
    • Momentum61 / 100 · weight 14%
      • Stars gained, relative to size86
      • Stars gained, absolute40
      • npm download trend41
    • Tool quality≈68 / 100 · weight 13%
      • Tool description quality≈68
        tool descriptions not yet scored
      • Built and inspected by Glamanot measured
        never built and inspected by Glama
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integratesnot measured
        not published by the vendor it integrates
    Weighted mean of the five
    71.5
    × relevance — the keyword is dedicated here
    1.00
    × continuity — actively changing
    1.00
    × evidence — widely adopted
    1.00
    Composite score
    71.5
  • 11

    MCP Mail Server

    Steady
    yunfeizhu/mcp-mail-server ↗

    Best for: Email workflow automation inside Cursor or Claude — it connects to IMAP/SMTP accounts and handles search, read, send, reply, and attachment tasks via natural language.

    The server bridges AI clients to IMAP/SMTP mailboxes, exposing tools for searching, reading, sending, replying, moving, and deleting messages with attachment handling. Before choosing it, note that authentication is limited to password or app-password — OAuth2 is not yet supported.

    GitHub stars
    45
    Stars over the last 90 days: 31 at the earliest of 13 readings and 45 at the latest, up 14.
    Stars / 30 days
    +1
    npm / typical week
    294
    Tools exposed
    never inspected
    Last commit
    yesterday
    Commits / 12 weeks
    15
    Weekly commits over the last 12 weeks, oldest first: 0, 0, 0, 0, 0, 0, 0, 14, 0, 0, 0, 1. 15 in total, and the last figure is the current week so far.
    Maintenance grade
    A
    Tool descriptions
    Not graded
    Score 70.0 — show every number behind it
    • Adoption59 / 100 · weight 40%
      • GitHub stars42
      • npm downloads53
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance97 / 100 · weight 24%
      • Last commit touching this server100
      • Repository maintenance grade100
      • Commit cadence85
    • Momentum39 / 100 · weight 14%
      • Stars gained, relative to size34
      • Stars gained, absolute15
      • npm download trend75
    • Tool quality≈68 / 100 · weight 13%
      • Tool description quality≈68
        tool descriptions not yet scored
      • Built and inspected by Glamanot measured
        never built and inspected by Glama
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integratesnot measured
        not published by the vendor it integrates
    Weighted mean of the five
    70.0
    × relevance — the keyword is dedicated here
    1.00
    × continuity — actively changing
    1.00
    × evidence — widely adopted
    1.00
    Composite score
    70.0
  • 12

    Thunderbird MCP

    Community favourite
    TKasperczyk/thunderbird-mcp ↗

    Best for: Thunderbird users who want an AI assistant to read, search and draft mail locally, with compose and folder tools via a localhost bridge.

    The server uses a localhost-only bridge to expose search, read, compose, folder, filter, calendar, and contact operations to MCP clients over HTTP. It requires Thunderbird 102+ with the extension installed, and no npm package is published for installation.

    GitHub stars
    264
    Stars over the last 90 days: 127 at the earliest of 13 readings and 264 at the latest, up 137.
    Stars / 30 days
    +39
    npm / typical week
    Ships no npm package
    Tools exposed
    never inspected
    Last commit
    37 days ago
    Commits / 12 weeks
    73
    Weekly commits over the last 12 weeks, oldest first: 0, 16, 0, 19, 0, 14, 0, 24, 0, 0, 0, 0. 73 in total, and the last figure is the current week so far.
    Maintenance grade
    A
    Tool descriptions
    Not graded
    Score 69.0 — show every number behind it
    • Adoption61 / 100 · weight 40%
      • GitHub stars61
      • npm downloadsnot measured
        no npm package
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance100 / 100 · weight 24%
      • Last commit touching this server100
      • Repository maintenance grade100
      • Commit cadence100
    • Momentum86 / 100 · weight 14%
      • Stars gained, relative to size100
      • Stars gained, absolute65
      • npm download trendnot measured
        no npm download history
    • Tool quality≈68 / 100 · weight 13%
      • Tool description quality≈68
        tool descriptions not yet scored
      • Built and inspected by Glamanot measured
        never built and inspected by Glama
    • Trust0 / 100 · weight 9%
      • License0
      • Published by the vendor it integratesnot measured
        not published by the vendor it integrates
    Weighted mean of the five
    69.0
    × relevance — the keyword is dedicated here
    1.00
    × continuity — actively changing
    1.00
    × evidence — widely adopted
    1.00
    Composite score
    69.0
  • 13

    openosint

    Community favourite
    OpenOSINT/OpenOSINT ↗

    Best for: Investigating a person, email, domain, IP, or phone from a chat prompt — its autonomous agent chains 20 OSINT tools and writes a report.

    OpenOSINT exposes 20 tools for email, username, breach, WHOIS, IP, subdomain, phone, Shodan, dorks, Pastebin, and more, and runs as a REPL, CLI, MCP server, or web UI. Before installing, note that many tools require API keys (HIBP, Shodan, VirusTotal, Censys, IP2Location, AbuseIPDB, Bright Data) and some depend on external binaries such as holehe, sherlock, sublist3r, and phoneinfoga being in PATH.

    GitHub stars
    1,392
    Stars over the last 90 days: 180 at the earliest of 32 readings and 1,392 at the latest, up 1,212.
    Stars / 30 days
    +391
    npm / typical week
    Ships no npm package
    Tools exposed
    20
    Last commit
    today
    Commits / 12 weeks
    271
    Weekly commits over the last 12 weeks, oldest first: 32, 15, 14, 39, 22, 45, 45, 16, 14, 20, 1, 8. 271 in total, and the last figure is the current week so far.
    Maintenance grade
    A
    Tool descriptions
    A
    Score 68.6 — show every number behind it
    • Adoption79 / 100 · weight 40%
      • GitHub stars79
      • npm downloadsnot measured
        no npm package
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance100 / 100 · weight 24%
      • Last commit touching this server100
      • Repository maintenance grade100
      • Commit cadence100
    • Momentum100 / 100 · weight 14%
      • Stars gained, relative to size100
      • Stars gained, absolute100
      • npm download trendnot measured
        no npm download history
    • Tool quality73 / 100 · weight 13%
      • Tool description quality65
      • Built and inspected by Glama100
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integrates100
    Weighted mean of the five
    87.9
    × relevance — the keyword is declared here
    0.78
    × continuity — actively changing
    1.00
    × evidence — widely adopted
    1.00
    Composite score
    68.6
  • 14

    M365 Assistant MCP Server

    Abandoned but popular
    ryaker/outlook-mcp ↗

    Best for: Managing Microsoft 365 email, calendar, files, and flows from Claude — it exposes dedicated tools for each service.

    The server exposes tools for Outlook email, calendar, folders, rules, OneDrive file operations, and Power Automate flow management, using Microsoft Graph and Power Automate APIs. It requires Azure app registration, a local OAuth auth server, and a .env configuration before use.

    GitHub stars
    423
    Stars / 30 days
    +21
    npm / typical week
    downloads not counted
    Tools exposed
    never inspected
    Last commit
    143 days ago
    Commits / 12 weeks
    0
    Maintenance grade
    C
    Tool descriptions
    Not graded
    Score 66.2 — show every number behind it
    • Adoption66 / 100 · weight 40%
      • GitHub stars66
      • npm downloadsnot measured
        npm publishes m365-mcp from debian777/m365-mcp
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance52 / 100 · weight 24%
      • Last commit touching this server68
      • Repository maintenance grade55
      • Commit cadence5
    • Momentum69 / 100 · weight 14%
      • Stars gained, relative to size79
      • Stars gained, absolute54
      • npm download trendnot measured
        no npm download history
    • Tool quality≈68 / 100 · weight 13%
      • Tool description quality≈68
        tool descriptions not yet scored
      • Built and inspected by Glamanot measured
        never built and inspected by Glama
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integratesnot measured
        not published by the vendor it integrates
    Weighted mean of the five
    66.2
    × relevance — the keyword is dedicated here
    1.00
    × continuity — actively changing
    1.00
    × evidence — widely adopted
    1.00
    Composite score
    66.2
  • 15

    Atomic Mail Agentic

    Community favourite
    Atomic-Mail/atomic-mail-agentic ↗

    Best for: Autonomous agents needing a self-created email inbox — it handles registration, reading, and sending via JMAP with proof-of-work signup.

    The server exposes register, jmap_request, and help tools, letting an agent create an Atomic Mail inbox and drive JMAP methods for reading and writing email. Its proof-of-work signup means no human verification is needed, but it only works with Atomic Mail accounts, not generic IMAP/SMTP.

    GitHub stars
    269
    Stars over the last 90 days: 1 at the earliest of 16 readings and 269 at the latest, up 268.
    Stars / 30 days
    -52
    npm / typical week
    Ships no npm package
    Tools exposed
    never inspected
    Last commit
    9 days ago
    Commits / 12 weeks
    164
    Weekly commits over the last 12 weeks, oldest first: 1, 1, 2, 63, 63, 3, 2, 0, 0, 3, 2, 24. 164 in total, and the last figure is the current week so far.
    Maintenance grade
    A
    Tool descriptions
    Not graded
    Score 66.1 — show every number behind it
    • Adoption61 / 100 · weight 40%
      • GitHub stars61
      • npm downloadsnot measured
        no npm package
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance100 / 100 · weight 24%
      • Last commit touching this server100
      • Repository maintenance grade100
      • Commit cadence100
    • Momentum0 / 100 · weight 14%
      • Stars gained, relative to size0
      • Stars gained, absolute0
      • npm download trendnot measured
        no npm download history
    • Tool quality≈68 / 100 · weight 13%
      • Tool description quality≈68
        tool descriptions not yet scored
      • Built and inspected by Glamanot measured
        never built and inspected by Glama
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integrates100
    Weighted mean of the five
    66.1
    × relevance — the keyword is dedicated here
    1.00
    × continuity — actively changing
    1.00
    × evidence — widely adopted
    1.00
    Composite score
    66.1
  • 16

    Mailgun MCP Server

    Community favourite
    mailgun/mailgun-mcp-server ↗

    Best for: Mailgun users who want an AI assistant to send email and review delivery stats — messaging and analytics tools cover it.

    It exposes 70 MCP tools generated from Mailgun's OpenAPI spec for sending, retrieving, and resending messages, managing domains and webhooks, and querying stats and analytics. Before choosing it, note that it runs locally over stdio via npx and requires a Mailgun API key.

    GitHub stars
    57
    Stars over the last 90 days: 57 at the earliest of 8 readings and 57 at the latest, unchanged.
    Stars / 30 days
    +2
    npm / typical week
    364
    Tools exposed
    70
    Last commit
    27 days ago
    Commits / 12 weeks
    5
    Weekly commits over the last 12 weeks, oldest first: 0, 1, 0, 0, 0, 0, 0, 1, 0, 3, 0, 0. 5 in total, and the last figure is the current week so far.
    Maintenance grade
    C
    Tool descriptions
    C
    Score 65.7 — show every number behind it
    • Adoption61 / 100 · weight 40%
      • GitHub stars44
      • npm downloads55
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance82 / 100 · weight 24%
      • Last commit touching this server100
      • Repository maintenance grade55
      • Commit cadence65
    • Momentum46 / 100 · weight 14%
      • Stars gained, relative to size39
      • Stars gained, absolute19
      • npm download trend90
    • Tool quality48 / 100 · weight 13%
      • Tool description quality40
      • Built and inspected by Glama100
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integrates100
    Weighted mean of the five
    65.7
    × relevance — the keyword is dedicated here
    1.00
    × continuity — actively changing
    1.00
    × evidence — widely adopted
    1.00
    Composite score
    65.7
  • 17

    Email MCP Server

    Abandoned but popular
    codefuturist/email-mcp ↗

    Best for: For AI assistants that must handle the full email lifecycle across multiple accounts — it exposes scheduling, triage, analytics, and calendar extraction tools.

    This server exposes 49 tools covering reading, searching, sending, managing, scheduling, and analyzing email across multiple IMAP/SMTP accounts. It requires Node.js 22 or later and per-account TOML configuration, so installation assumes a local runtime rather than a hosted service.

    GitHub stars
    89
    Stars over the last 90 days: 51 at the earliest of 8 readings and 89 at the latest, up 38.
    Stars / 30 days
    +18
    npm / typical week
    3.7K
    Tools exposed
    49
    Last commit
    92 days ago
    Commits / 12 weeks
    0
    Maintenance grade
    D
    Tool descriptions
    A
    Score 65.5 — show every number behind it
    • Adoption81 / 100 · weight 40%
      • GitHub stars49
      • npm downloads74
        downloads capped: not corroborated by repository audience
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance57 / 100 · weight 24%
      • Last commit touching this server88
      • Repository maintenance grade30
      • Commit cadence5
    • Momentum75 / 100 · weight 14%
      • Stars gained, relative to size100
      • Stars gained, absolute52
      • npm download trend56
    • Tool quality88 / 100 · weight 13%
      • Tool description quality80
      • Built and inspected by Glama100
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integratesnot measured
        not published by the vendor it integrates
    Weighted mean of the five
    77.1
    × relevance — the keyword is dedicated here
    1.00
    × continuity — actively changing
    1.00
    × evidence — modest but real audience
    0.85
    Composite score
    65.5
  • 18

    emailmd

    Community favourite
    anypost/emailmd ↗

    Best for: Drafting email campaigns in markdown that must render correctly in Outlook and Gmail — it converts markdown to email-safe HTML and lints deliverability.

    emailmd exposes three tools: render, lint, and read_docs, covering markdown-to-HTML conversion, deliverability checks, and syntax documentation. One thing to know: it requires Node 20+ and its render() is async.

    GitHub stars
    1,302
    Stars / 30 days
    +21
    npm / typical week
    Ships no npm package
    Tools exposed
    3
    Last commit
    4 days ago
    Commits / 12 weeks
    51
    Weekly commits over the last 12 weeks, oldest first: 1, 0, 1, 0, 0, 35, 3, 4, 6, 0, 0, 1. 51 in total, and the last figure is the current week so far.
    Maintenance grade
    A
    Tool descriptions
    A
    Score 64.9 — show every number behind it
    • Adoption78 / 100 · weight 40%
      • GitHub stars78
      • npm downloadsnot measured
        no npm package
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance100 / 100 · weight 24%
      • Last commit touching this server100
      • Repository maintenance grade100
      • Commit cadence100
    • Momentum52 / 100 · weight 14%
      • Stars gained, relative to size50
      • Stars gained, absolute54
      • npm download trendnot measured
        no npm download history
    • Tool quality91 / 100 · weight 13%
      • Tool description quality83
      • Built and inspected by Glama100
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integratesnot measured
        not published by the vendor it integrates
    Weighted mean of the five
    83.2
    × relevance — the keyword is declared here
    0.78
    × continuity — actively changing
    1.00
    × evidence — widely adopted
    1.00
    Composite score
    64.9
  • 19

    outlook-mcp

    Emerging
    littlebearapps/outlook-assistant ↗

    Best for: For managing Outlook email, calendar, and contacts from an AI assistant — this server's 22 Graph API tools cover all of those workflows.

    It exposes 22 MCP tools for Outlook email, calendar, contacts, folders, rules, categories, and settings through the Microsoft Graph API, including read-only search/read/export and destructive send, draft, event, contact, and rule actions. Before choosing it, note that it requires an Outlook account with Graph API authentication, and shared-mailbox and meeting-room features are available only on Microsoft 365.

    GitHub stars
    33
    Stars over the last 90 days: 18 at the earliest of 13 readings and 33 at the latest, up 15.
    Stars / 30 days
    +8
    npm / typical week
    203
    Tools exposed
    22
    Last commit
    19 days ago
    Commits / 12 weeks
    38
    Weekly commits over the last 12 weeks, oldest first: 0, 20, 0, 0, 0, 0, 0, 0, 0, 17, 1, 0. 38 in total, and the last figure is the current week so far.
    Maintenance grade
    B
    Tool descriptions
    A
    Score 64.7 — show every number behind it
    • Adoption55 / 100 · weight 40%
      • GitHub stars38
      • npm downloads49
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance95 / 100 · weight 24%
      • Last commit touching this server100
      • Repository maintenance grade80
      • Commit cadence100
    • Momentum71 / 100 · weight 14%
      • Stars gained, relative to size87
      • Stars gained, absolute38
      • npm download trend81
    • Tool quality96 / 100 · weight 13%
      • Tool description quality88
      • Built and inspected by Glama100
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integratesnot measured
        not published by the vendor it integrates
    Weighted mean of the five
    76.1
    × relevance — the keyword is dedicated here
    1.00
    × continuity — actively changing
    1.00
    × evidence — modest but real audience
    0.85
    Composite score
    64.7
  • 20

    IMAP MCP Server

    Emerging
    nikolausm/imap-mcp-server ↗

    Best for: Managing one or more email accounts with an AI assistant — it provides 40 IMAP/SMTP tools for send, search, reply, folders, flags, and spam.

    This server exposes 40 IMAP/SMTP tools covering encrypted account management, search and read, send/reply/forward, folders, flags and keywords, and spam domain handling, plus a web-based setup wizard with provider presets. It requires Node.js 22.12 or newer, so check your runtime before installing.

    GitHub stars
    74
    Stars over the last 90 days: 35 at the earliest of 19 readings and 74 at the latest, up 39.
    Stars / 30 days
    +20
    npm / typical week
    371
    Tools exposed
    40
    Last commit
    15 days ago
    Commits / 12 weeks
    87
    Weekly commits over the last 12 weeks, oldest first: 3, 0, 23, 3, 14, 13, 3, 1, 12, 3, 0, 12. 87 in total, and the last figure is the current week so far.
    Maintenance grade
    A
    Tool descriptions
    A
    Score 63.4 — show every number behind it
    • Adoption51 / 100 · weight 40%
      • GitHub stars47
      • npm downloads27
        downloads show none of the weekday rhythm human traffic has; halved
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance100 / 100 · weight 24%
      • Last commit touching this server100
      • Repository maintenance grade100
      • Commit cadence100
    • Momentum81 / 100 · weight 14%
      • Stars gained, relative to size100
      • Stars gained, absolute53
      • npm download trend81
    • Tool quality76 / 100 · weight 13%
      • Tool description quality68
      • Built and inspected by Glama100
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integratesnot measured
        not published by the vendor it integrates
    Weighted mean of the five
    74.6
    × relevance — the keyword is dedicated here
    1.00
    × continuity — actively changing
    1.00
    × evidence — modest but real audience
    0.85
    Composite score
    63.4

Questions people ask

How do I choose between Google Workspace MCP Server and Microsoft 365 MCP Server?

Choose by the provider you use. Google Workspace MCP Server exposes 122 tools for Gmail, Calendar, and Drive; Microsoft 365 MCP Server exposes 188 tools for Excel, Calendar, Mail, OneDrive, and Teams. Both are active: Google had a commit 2 days ago and Microsoft had a commit 1 day ago.

Which general IMAP/SMTP server should I use if my accounts are on different providers?

IMAP MCP Server is the broadest option: 40 tools for send, search, reply, folders, flags, and spam, with a commit 15 days ago and 87 commits in the last 12 weeks. MCP Email Server is a smaller alternative with 14 tools and A tool descriptions, but it had a commit 12 days ago. For a single server across providers, IMAP MCP Server gives you more surface area.

Resend, Postmark, or Mailgun: which sending MCP should I pick?

Pick the one that matches the API you already use. Email Sending MCP is the Resend option with 91 tools and 12,852 downloads in a typical week. Postmark MCP Server covers Postmark sending, templates, and delivery statistics. Mailgun MCP Server exposes 70 tools and had a commit 27 days ago, so it is the Mailgun-focused choice.

How do I let an AI assistant work with Apple Mail on a Mac?

On macOS, install apple-mail-mcp; it talks to the Mail app through AppleScript and exposes 50 tools for send, search, draft, reply, forward, and mailbox management. Apple Mail MCP Server is another macOS option with 26 tools and an expert skill system. apple-mail-mcp had a commit 1 day ago, and Apple Mail MCP Server had one 16 days ago.

Which of these should I avoid if I need an actively maintained project?

M365 Assistant MCP Server and Email MCP Server (codefuturist/email-mcp) both carry the profile Abandoned but popular. M365 Assistant MCP Server had its last commit 143 days ago and 0 commits in the last 12 weeks; Email MCP Server (codefuturist/email-mcp) had its last commit 92 days ago and 0 commits in the last 12 weeks. If recent maintenance matters, choose one with a more recent commit, such as Google Workspace MCP Server or Microsoft 365 MCP Server.

What should I use if I need to investigate an email address or domain?

OpenOSINT is the OSINT-focused option: it exposes 20 tools and is built for investigating a person, email, domain, IP, or phone from a chat prompt. It had a commit 0 days ago and 271 commits in the last 12 weeks. It is not a replacement for managing a normal inbox.

Other comparisons