Log inSubmit server

Best MCP Servers for Slack & Communication (2026)

The best MCP servers for team communication — let AI agents read, post, and analyze across Slack, Discord, email, and other messaging platforms.

Top 10 · ranked by installs, upvotes, stars and views · refreshed hourly

  1. Call4me logo

    #1 Call4me

    Official

    Why it’s hereMost popular in this category on AllMCPs

    call4me lets your AI agent make real phone calls for you. Ask Claude, ChatGPT, Cursor, Codex or your own app to book a table, schedule a dentist appointment, cancel a subscription or ask a business a question. It calls, waits on hold, gets through the phone menu, talks to the person who answers, and reports back with the outcome and a transcript. It can also ring you to join the call. Calls are paid from prepaid credits, starting at $10.

    Upvotes: 3Installs: 8GitHub stars: 16
    Install
  2. Ms 365 MCP Server logo

    #2 Ms 365 MCP Server

    softeria

    Why it’s hereCommunity pick

    MCP server that connects to Microsoft Office and the whole Microsoft 365 suite using Graph API (including Outlook, mail, files, Excel, calendar)

    Upvotes: 0Installs: 0GitHub stars: 1.1k
    Install
  3. Line Bot MCP Server logo

    #3 Line Bot MCP Server

    lineOfficial

    Why it’s hereOfficial server

    MCP Server for Integrating LINE Official Account

    Upvotes: 0Installs: 0GitHub stars: 792
    Install
  4. Emailmd logo

    #4 Emailmd

    anypost

    Why it’s hereCommunity pick

    Write and preview emails from your assistant. Renders markdown into email-safe HTML that holds up in Outlook and Gmail, lints drafts for deliverability problems, and returns a live preview link. Hosted with no API key, or run it locally with npx emailmd mcp.

    Upvotes: 0Installs: 0GitHub stars: 1.4k
    Install
  5. Threadline MCP logo

    #5 Threadline MCP

    Why it’s hereCommunity pick

    Agent-to-agent messaging relay. Discover agents, send messages, and receive replies. Zero-config.

    Upvotes: 0Installs: 0GitHub stars: 84
    Install
  6. Telegram MCP logo

    #6 Telegram MCP

    chaindead

    Why it’s hereCommunity pick

    Telegram API integration for accessing user data, managing dialogs (chats, channels, groups), retrieving messages, and handling read status

    Upvotes: 0Installs: 0GitHub stars: 349
    Install
  7. Email MCP logo

    #7 Email MCP

    codefuturist

    Why it’s hereCommunity pick

    IMAP/SMTP email MCP server with 42 tools for reading, searching, sending, scheduling, and managing emails across multiple accounts. Supports IMAP IDLE push, AI triage, desktop notifications, and auto-detects providers like Gmail, Outlook, and iCloud.

    Upvotes: 0Installs: 0GitHub stars: 137
    Install
  8. Agenticmail logo

    #8 Agenticmail

    agenticmail

    Why it’s hereCommunity pick

    Real email and SMS for AI agents. Run a local mail server with disposable inboxes, send/receive real email, fetch verification codes, and drive a real inbox — all from your machine, no third-party email API. Install with npx @agenticmail/mcp.

    Upvotes: 0Installs: 0GitHub stars: 242
    Install
  9. Imap MCP Server logo

    #9 Imap MCP Server

    Why it’s hereCommunity pick

    IMAP/SMTP MCP server to search, read, organize, send, reply & forward email for AI assistants

    Upvotes: 0Installs: 0GitHub stars: 112
    Install
  10. Google Workspace logo

    #10 Google Workspace

    Why it’s hereCommunity pick

    Give AI agents access to Gmail, Calendar, Drive, and more — multi-account, manifest-driven

    Upvotes: 0Installs: 0GitHub stars: 192
    Install

Which Slack & Communication MCP server should you use?

For Slack specifically, check whether a server uses a bot token (`xoxb-`) or a user token (`xoxp-`) before installing — a bot token posts as a visible "App" and only sees channels it's invited to, which is usually the safer and more auditable choice for an AI agent than a token that acts as your own user.

Scope the token to the channels the agent actually needs to read or post in rather than a workspace-wide token, and start with read-only (search/read) permissions before granting post/write scopes.

Frequently asked questions about Slack & Communication MCP servers

What is the best MCP server for Slack?

Community Slack MCP servers are the most installed for reading and posting messages. This page ranks communication servers by real usage.

Can MCP servers send messages on my behalf?

Yes, with a token you provide. Scope the token to the channels and actions you actually want the agent to have.

Which chat platforms have MCP servers?

Slack, Discord, Telegram, email (IMAP/SMTP), and more — browse the full Communication category for the complete list.