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20 Best Email MCP Servers: compared and ranked, October 2026Ranked from 3,203 matching servers on stars, growth, downloads and maintenance. Updated .

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  • A
    license
    B
    quality
    A
    maintenance
    Enables read-only search and retrieval of your email across multiple IMAP accounts through a local notmuch index, served over authenticated HTTP for MCP clients like Claude or Codex.
    11
    19
    MIT
  • A
    license
    Not graded
    quality
    B
    maintenance
    Send email, find out why an email failed, set up sending domains, and manage templates, contacts, lists and campaigns in your AhaSend account.
    MIT
  • A
    license
    Not graded
    quality
    D
    maintenance
    Multi-account IMAP/SMTP email MCP server with 22 tools — read, send, search, organize, thread, attachments, and batch operations. Features connection pooling, rate limiting, retry with backoff, and OAuth2 device-code flow. Written in Go.
    3
    MIT
  • A
    license
    Not graded
    quality
    C
    maintenance
    Enables AI agents to communicate with business agents across company boundaries using Google's A2A protocol, with tools for discovery, messaging, and connection management.
    MIT
  • F
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    quality
    F
    maintenance
    MCP server exposing JMAP email and Sieve script operations as tools, enabling mailbox management, email creation, search, flagging, and Sieve script management.
    2
    -
  • A
    license
    A
    quality
    B
    maintenance
    Compare service-grant changes, tool alias origins, and saved MCP tool definitions with Gooo rules. Reports preserve incomplete-capture uncertainty and source bindings. No grants are applied and no compared tools are invoked.
    4
    1
    BSD 3-Clause
  • A
    license
    A
    quality
    A
    maintenance
    Baryon connects MCP-compatible AI assistants to Proton Mail through a local bridge, enabling email search, reading, attachment handling, and draft creation while enforcing deliberate permission limits. It runs locally and cannot send, delete, or modify mail.
    12
    BSD 3-Clause
  • A
    license
    A
    quality
    A
    maintenance
    Local ledger for development ports: leases a block of ports per project slot (one per working copy), renders env files, and resolves service names to URLs. No daemon, no listener.
    6
    MIT
  • A
    license
    A
    quality
    B
    maintenance
    Manage your entire notification infrastructure using natural language. Trigger workflows, create users, manage preferences, update tenant branding, and access docs — all from Cursor, Claude Desktop, or Windsurf. 24 tools covering email, SMS, push, WhatsApp, Slack, MS Teams, and in-app notifications.
    22
    12
    MIT
  • A
    license
    A
    quality
    A
    maintenance
    Enables AI agents to ask what changed in a time window and get back a short, ranked answer across metrics, logs and traces, with the service where a failure started identified and its echoes in other services labelled as such. Read-only and deterministic, it scores changes against a baseline and trims results to a token budget, so agents avoid paging through raw queries and blaming the loudest symptom.
    4
    Apache 2.0
  • A
    license
    A
    quality
    C
    maintenance
    Tickstem is a developer infrastructure platform for production SaaS apps. This MCP server lets you manage cron jobs and verify email addresses directly from your AI coding assistant — no dashboard needed. Register jobs, check execution history, verify emails for syntax, MX records, disposable domains, and role-based prefixes, all through natural language.
    26
    2
    MIT
  • A
    license
    B
    quality
    A
    maintenance
    Connects coding agents to local development services managed by Kranz. Agents can inspect service health, ports, logs, and run history, and perform lifecycle actions through the same live runtime as the TUI and CLI.
    25
    62
    MIT
  • A
    license
    Not graded
    quality
    B
    maintenance
    DATPAQ exposes 34 production data & utility APIs — IP geolocation, DNS/WHOIS/MX lookups, email & phone validation, currency & precious-metals rates, aircraft/VIN lookups, web scraping & screenshots, and more — through one hosted, streamable-HTTP MCP endpoint.
    Apache 2.0
  • A
    license
    Not graded
    quality
    A
    maintenance
    Enables AI assistants to manage and query Tiger Cloud database services, including service lifecycle operations, database connections, and SQL execution.
    127
    Apache 2.0
  • A
    license
    Not graded
    quality
    A
    maintenance
    Ephemeral mailboxes and a mock OAuth IdP for testing email and auth flows — 39 API-driven tools covering mailboxes, mails, attachments, domains, teams, and mock identities.
    MIT
  • A
    license
    Not graded
    quality
    A
    maintenance
    deptrust is a CLI that checks package versions for known vulnerabilities across npm, PyPI, crates.io, Go modules, RubyGems, NuGet, Maven, Packagist, pub.dev, CocoaPods, Hex.pm, Hackage, GitHub Actions, and more. It runs locally as a CLI and as an MCP server. It calls public package registry and OSV APIs directly; there is no hosted deptrust service to trust or configure.
    264 npm
    61
    MIT
  • A
    license
    Not graded
    quality
    C
    maintenance
    Talk to AWS CLI from an MCP-speaking agent. Run any aws <service> <operation> command through the Model Context Protocol, with read-only defaults and gated write access.
    MIT
  • A
    license
    Not graded
    quality
    A
    maintenance
    Self-hosted OpenTelemetry backend in one Go binary. Its MCP server exposes tools for service health, latency, topology, trace inspection, log search, read-only SQL over traces, logs and metrics, and dashboards.
    10
    Apache 2.0