"Guide to Using LangChain Correctly" matching MCP servers:

• send-to-kindle-mcp

  BenjaminBini

  A

  license

  A

  quality

  C

  maintenance

  Sends document files (EPUB, PDF, DOCX, etc.) to your Kindle via email using Amazon's Send to Kindle feature.

  Last updated 2026-06-28

  1

  13

  MIT

• inbox-to-action-mcp

  tarunlnmiit

  A

  license

  A

  quality

  A

  maintenance

  One-pass agentic inbox triage as an MCP server: fetch unread Gmail → classify (action_needed/fyi/newsletter/noise) → summarize → extract tasks → draft replies as Gmail DRAFTS (never sends) → flag calendar → write a triage report. Four stdio tools (fetch_emails, save_gmail_draft, append_tasks, write_report); the host is the LLM, so it runs keyless in Claude Code. Gmail scopes: readonly + compose

  Last updated 2026-07-26

  4

  4

  MIT

• Send to Kindle MCP Server

  wahiggins3

  A

  license

  -

  quality

  D

  maintenance

  A Model Context Protocol (MCP) server that allows Claude Desktop to send documents directly to your Kindle e-reader.

  Last updated 2025-12-15

  2

  MIT

• shipmail-mcp

  shipmail-to

  A

  license

  A

  quality

  A

  maintenance

  Official MCP server for Shipmail, enabling agents to manage domains, mailboxes, messages, threads, webhooks, and suppressions via natural language.

  Last updated 2026-07-30

  100

  2,365

  1

  MIT

• Customer Support Ticket

  ManideepMuddagowni

  F

  license

  -

  quality

  D

  maintenance

  Enables AI-driven customer support ticket processing, including classification, response generation, and automated email sending and Google Sheets logging.

  Last updated 2025-06-05

• Gmail MCP Server

  cherryaugusta

  A

  license

  -

  quality

  D

  maintenance

  A Windows-first Python MCP server for Gmail that reads unread emails and creates correctly threaded draft replies using the Gmail API.

  Last updated 2026-04-06

  MIT

• Proton Bridge MCP

  krantiutils

  A

  license

  -

  quality

  C

  maintenance

  Enables sending correctly threaded email replies through Proton Mail Bridge using SMTP with proper In-Reply-To and References headers, avoiding IMAP draft pitfalls.

  Last updated 2026-06-08

  MIT

• mcp-personal

  afoone

  F

  license

  -

  quality

  D

  maintenance

  MCP server that provides tools to manage Gmail and Outlook emails, and search Mercadona products, for use with Cursor and LangChain.

  Last updated 2026-02-08

• Office 365 Email MCP

  cybrlou

  A

  license

  A

  quality

  C

  maintenance

  Enables AI agents to send emails via Microsoft 365/Office 365 using app-only authentication and Microsoft Graph API, supporting HTML content, attachments, and CC/BCC.

  Last updated 2026-06-25

  2

  MIT
• 

  @sendbyte/mcpofficial

  Sendbyte-Africa

  A

  license

  A

  quality

  C

  maintenance

  Enables AI agents to send emails and manage sending domains, templates, analytics, and content checks through the SendByte platform using the Model Context Protocol.

  Last updated 2026-06-22

  11

  13

  MIT

• claude-gmail-mcp

  pliablepixels

  A

  license

  A

  quality

  D

  maintenance

  A Gmail MCP server that enables Claude to send, search, and read emails using either Gmail API or SMTP/IMAP backend.

  Last updated 2026-04-18

  3

  MIT

• Gmail no-CASA MCP

  aavaz-ai

  A

  license

  A

  quality

  C

  maintenance

  A minimal MCP server for sending plain-text emails and managing Gmail user labels over stdio, using only gmail.send and gmail.labels OAuth scopes.

  Last updated 2026-07-30

  4

  234

  MIT

• @1tempmail/mcp-server

  haskx

  A

  license

  A

  quality

  C

  maintenance

  Enables AI assistants to generate temporary email addresses, check inboxes, and read messages using the 1TempMail API.

  Last updated 2026-07-15

  3

  181

  MIT
• 

  MailboxValidator Emailofficial

  MailboxValidator

  A

  license

  A

  quality

  B

  maintenance

  Email validation MCP server using MailboxValidator API to determine validity of an email address.

  Last updated 2026-06-03

  3

  45

  1

  MIT

• tbird-mcp

  neil-zielsdorf

  A

  license

  A

  quality

  C

  maintenance

  Reads and searches Thunderbird mail from local mbox files and sends mail via SMTP using auto-discovered identities, filing copies in Thunderbird's Sent folder.

  Last updated 2026-06-03

  9

  MIT

• gmail-mcp-local

  alexpekach

  A

  license

  A

  quality

  A

  maintenance

  Local-first Gmail MCP server using PKCE + loopback OAuth flow that stores refresh tokens in the OS keychain, enabling secure read/write Gmail access via MCP tools without tokens leaving the device.

  Last updated 2026-06-10

  20

  MIT

• ProtonMail MCP Server

  ronamosa

  A

  license

  A

  quality

  B

  maintenance

  Enables AI agents to send, read, search, and organize emails via ProtonMail using Proton Bridge. Supports MCP-compatible clients like Claude and Cursor.

  Last updated 2026-07-25

  17

  27

  3

  MIT

• GAM MCP Server

  undeadindustries

  F

  license

  A

  quality

  C

  maintenance

  Enables Google Workspace administration (Directory, Gmail, Drive, Sheets) via MCP using Domain-Wide Delegation for secure, schema-validated tool operations.

  Last updated 2026-07-08

  13

• Outlook Email MCP Server

  nhatho0001

  F

  license

  A

  quality

  B

  maintenance

  An MCP server that enables reading and managing Microsoft 365 / Outlook emails through Microsoft Graph API, allowing users to list, search, send, draft, and authenticate using device code flow.

  Last updated 2026-07-16

  17

• macos-mcp

  theHaruspex

  A

  license

  B

  quality

  B

  maintenance

  Local MCP server for macOS native apps: Mail, Calendar, Reminders, Notes, Messages, and Contacts. Enables reading and organizing your Mac life through a single stdio process using AppleScript/JXA.

  Last updated 2026-07-15

  40

  25

  MIT