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20 Best PostgreSQL MCP Servers: compared and ranked, October 2026Ranked from 1,324 matching servers on stars, growth, downloads and maintenance. Updated .

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  • F
    license
    Not graded
    quality
    D
    maintenance
    Enables AI-powered email management through Gmail, including search, send, drafts, labels, and an intelligent agent with human approval workflow and optional customer database integration.
    -
  • F
    license
    Not graded
    quality
    C
    maintenance
    A collection of MCP servers for database management and Gmail integration, allowing AI agents to perform database queries and email operations.
    -
  • F
    license
    A
    quality
    A
    maintenance
    Enables MCP clients to validate email addresses locally before sending or saving them, detecting typos, disposable domains, dead domains, bad syntax, role addresses, duplicates, and provider information.
    2
    -
  • A
    license
    A
    quality
    C
    maintenance
    Reads and searches local email archives (.mbox or .eml) with full MIME parsing, enabling queries about senders, subjects, dates, and bodies while keeping all data on your machine.
    3
    6,226 npm
    MIT
  • A
    license
    A
    quality
    C
    maintenance
    An MCP server that exposes a local notmuch email database to an LLM client such as Claude. It is read-first: searching, reading, and understanding mail is always available; writing anything (drafts, tags, exported files) requires an explicit opt-in flag and is confined to clearly bounded locations.
    13
    2
    MIT
  • A
    license
    A
    quality
    D
    maintenance
    Enables Gmail label management with tools to list, create, delete labels, and modify labels on messages and threads, handling OAuth2 authentication automatically.
    7
    MIT
  • 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
    A
    maintenance
    This MCP server provides comprehensive Google Workspace integration (Gmail, Drive, etc.) with multi-user OAuth. Unique features include RAG-powered natural language to Chat card rendering, runtime Jinja2 macro creation, and dynamic tool management.
    7
    120 PyPI
    25
    Apache 2.0
  • A
    license
    A
    quality
    A
    maintenance
    Local-first Microsoft Outlook MCP server: a single Go binary that manages calendar events and mail through the Microsoft Graph API over stdio, with tokens stored in the OS keychain and no Entra ID app registration required. Exposes four aggregate tools (calendar, mail, account, system) dispatched by an operation verb, with multi-account support and read-only and mail-gating modes.
    4
    42
    MIT
  • A
    license
    A
    quality
    C
    maintenance
    A local MCP server that connects Claude Desktop to a personal Hotmail/Outlook.com mailbox via Microsoft Graph API, enabling email management, rule handling, and composing messages.
    25
    MIT
  • A
    license
    A
    quality
    B
    maintenance
    A local MCP server that provides Gmail tools (search, read, send, draft, label management) while keeping your emails only between your machine and Google, with no third-party access.
    6
    14 PyPI
    MIT
  • A
    license
    A
    quality
    C
    maintenance
    Enables natural language management of email aliases via EmailAlias.io API, including create, update, delete, and monitoring tasks.
    13
    202 npm
    MIT
  • A
    license
    A
    quality
    B
    maintenance
    Enables read-only querying of eight campus services through independent local MCP adapters: mailbox search, reading and attachment download, Blackboard courses, academic-system terms, timetable and grades, library loans and navigation, teaching-office notices, the Nan7 market listings, course-review community ratings, and the campus data dashboard. Credentials and sessions remain on the user's own device, encrypted with Windows DPAPI, and nothing is submitted, registered, or booked on the user's behalf.
    7
    1
    MIT
  • A
    license
    A
    quality
    D
    maintenance
    Provider-agnostic email MCP server that connects any IMAP mailbox to AI assistants, enabling email management through natural language.
    8
    AGPL 3.0