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81,811 servers. Updated
20 Best Email MCP Servers: compared and ranked, September 2026Ranked from 2,148 matching servers on stars, growth, downloads and maintenance. Updated .

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  • A
    license
    A
    quality
    A
    maintenance
    Provides IMAP and SMTP capabilities, enabling developers to manage email services with seamless integration and automated workflows.
    15
    320
    BSD 3-Clause
  • A
    license
    A
    quality
    A
    maintenance
    Agent-native cold-email infrastructure providing ~12 high-level tools for domain setup, mailbox provisioning, campaign launch, inbox management, and metrics, all operated via MCP or CLI.
    28
    1
    MIT
  • A
    license
    A
    quality
    B
    maintenance
    Enables AI agents to send, receive, and reply to email through dedicated thread-aware mailboxes, with sandbox testing and compatibility across MCP clients.
    9
    87
    MIT
  • A
    license
    Not graded
    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.
    3
    MIT
  • A
    license
    Not graded
    quality
    D
    maintenance
    Real-time hydrological information retrieval service that provides water level, precipitation, dam discharge data, and observatory location information.
    1
    Apache 2.0
  • A
    license
    Not graded
    quality
    B
    maintenance
    Full-stack email MCP server in Rust: IMAP, SMTP, Exchange Web Services, and Microsoft Graph in one binary, with OAuth2 and multi-account support. Read, search, send, reply, forward, bulk operations, and attachment download to disk.
    69
    MIT
  • F
    license
    Not graded
    quality
    C
    maintenance
    MCP server for any IMAP mailbox that lets AI models read, search, send, and manage email, including processing attachments as images.
    1
  • A
    license
    A
    quality
    A
    maintenance
    Domain security reconnaissance for AI agents — 13 tools (DNS+DNSSEC, SSL/TLS, HTTP security headers, SPF/DKIM/DMARC email auth, port scan, ASN, RDAP/WHOIS) plus a one-shot security_scan returning a 0–100 Health Score (A–F). Free, no API key.
    13
    56
    1
    MIT
  • A
    license
    A
    quality
    A
    maintenance
    A brain for your mail: MailFathom turns IMAP mailboxes into a self-hosted, AI-native service.
    20
    14
    AGPL 3.0
  • A
    license
    A
    quality
    B
    maintenance
    An MCP server that checks SPF, DKIM, DMARC, and MX records for a domain, returning a health verdict and specific DNS fixes to improve email deliverability.
    1
    MIT
  • 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.
    11
    BSD 3-Clause
  • A
    license
    A
    quality
    B
    maintenance
    Enables querying the Polish National Health Fund (NFZ) public API for medical waiting lists and service dictionary, allowing AI to compare wait times and find providers.
    3
    MIT
  • A
    license
    A
    quality
    A
    maintenance
    23 developer & data API tools for AI agents - IP/DNS/WHOIS/SSL lookups, web scraping & screenshots, text AI (summarize, translate, sentiment, grammar, redact), and dev utilities (hash, UUID, QR, JWT, cron, IBAN/VAT/email validation, breach check).
    23
    MIT