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19 Best Email MCP Servers: compared and ranked, October 2026Ranked from 2,563 matching servers on stars, growth, downloads and maintenance. Updated .

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  • A
    license
    Not graded
    quality
    C
    maintenance
    MCP server for email + calendar via classic Outlook on Windows (COM automation). No Azure app registration, no OAuth — it just drives the Outlook desktop client you're already signed into.
    27 npm
    MIT
  • A
    license
    A
    quality
    B
    maintenance
    An MCP server providing comprehensive email capabilities via IMAP and SMTP, enabling AI assistants to read, search, send, manage, schedule, and analyze emails across multiple accounts.
    49
    1,108 npm
    LGPL 3.0
  • A
    license
    A
    quality
    D
    maintenance
    Enables AI assistants to access Aruba email and calendar services through IMAP, SMTP, and CalDAV protocols. Users can list, search, and send emails with custom signatures, as well as manage calendar events and invitations.
    14
    3
    MIT
  • F
    license
    B
    quality
    B
    maintenance
    MCP server providing AI assistants with full access to Microsoft Outlook email and calendar via the Microsoft Graph API, featuring 26 tools for mail, calendar, contacts, and scheduling with delegated authentication.
    29
    -
  • A
    license
    Not graded
    quality
    B
    maintenance
    A stateless MCP server that forwards calendar operations to a CalDAV server, enabling AI assistants to list, search, create, update, delete events, and query free/busy information via encrypted tokens.
    AGPL 3.0
  • F
    license
    Not graded
    quality
    B
    maintenance
    Enables reading, converting, and managing email messages, calendars, and contacts, along with mail account folder/thread operations and personal name parsing/formatting, via typed MCP tools.
    -
  • A
    license
    Not graded
    quality
    B
    maintenance
    Enables voice-driven appointment booking for small businesses, letting customers check availability, book, reschedule, and cancel appointments through any MCP client.
    1 npm
    MIT
  • A
    license
    Not graded
    quality
    B
    maintenance
    MCP server giving Claude access to Tuta mail, calendar, contacts and drive. Supports mail modes (dedicated/shared/folder), trusted sender filtering with E2E verification, and Docker-based setup.
    AGPL 3.0
  • A
    license
    A
    quality
    D
    maintenance
    Enables AI assistants to interact with Fastmail services, providing tools for comprehensive email management, contact searching, and calendar event coordination via the JMAP API. It supports advanced features like threaded conversations, attachment handling, and bulk mailbox operations through natural language.
    28
    MIT
  • A
    license
    A
    quality
    D
    maintenance
    A privacy-first MCP server for inbox triage, enabling masked email reading, calendar upsert, reply drafting, and Slack digests using Google and Slack credentials.
    10
    MIT
  • A
    license
    A
    quality
    A
    maintenance
    A self-hosted MCP server that provides secure access to iCloud Mail, Calendar, and Contacts, enabling agents to read and send email, manage calendar events, and search contacts with safety controls like approval for outgoing messages.
    50
    2
    MIT
  • A
    license
    A
    quality
    B
    maintenance
    MCP server for iCloud integration, providing tools for managing calendars, contacts, and email.
    24
    7
    MIT