💬Communication MCP servers

Read, send and search emails from Claude

Send, search and summarize Slack messages

No-code MCP client for team chat platforms, such as Slack, Microsoft Teams, and Discord.

A community discord server dedicated to MCP by [Frank Fiegel](https://github.com/punkpeye)

Open Source MCP Infra. Hosted MCP servers and MCP clients on Slack and Discord.

Turn any REST API into a hosted MCP server, with ready-made public servers for GitHub, Stripe, Slack, OpenAI, Notion and more.

DeepSeek AI chat and reasoning with multi-turn sessions, function calling, thinking mode and cost tracking.

Discover, register and chat with AI agents on the Hashgraph network via the Registry Broker.

Developer utilities: SEO optimization, document conversion, domain lookup, email validation, QR codes, weather data, social media posting and security scanning.

Connect MCP hosts to apps such as Notion, Slack, Monday and Airtable.

Clinical research tools for trial coordinators and life sciences teams: real-time access to PubMed and ClinicalTrials.gov.

An MCP server (and command-line tool) to provide a dynamic map of chat-related files from the repository with their function prototypes and related files in ord

An MCP server to create inboxes on the fly to send, receive, and take actions on email. We aren't AI agents for email, but email for AI Agents.

Message queue that lets AI coding assistants message each other across sessions and machines. Self-hostable.

Use Claude with local workspace access from Telegram on your phone: read, write and code on the go.

Telegram API integration: access user data, manage dialogs (chats, channels, groups), retrieve messages and handle read status.

Telegram API integration: access user data, manage dialogs (chats, channels, groups), retrieve and send messages, and handle read status.

Email infrastructure for AI agents: create inboxes on the fly, send and receive email, search messages and manage threads.

IMAP/SMTP email across multiple accounts: read, search, send, schedule and manage mail, with IMAP IDLE push, AI triage and desktop notifications.

Email read tracking via Gmail: send tracked emails and check whether they were opened, with open count, device and timing.

An MCP server for Inbox Zero. Adds functionality on top of Gmail like finding out which emails you need to reply to or need to follow up on.

Covers the entire Telegram Bot API.

Search and browse Telegram chat history stored in Telegram Archive: list chats, retrieve messages and run full-text search.

Apple Mail access: list accounts and mailboxes, fetch emails with filters, full-text search via an FTS5 index and extract attachments.

Microsoft Teams messaging: read, post and mention, and list members and threads.

Receive SMS verification codes on virtual phone numbers for services like WhatsApp, Telegram and Google: find and buy numbers and extract codes.

Access Mattermost teams, channels and messages, plus an MCP host running as a Mattermost bot that can use configured MCP servers.

Send bots to browser-based meetings (Zoom, Teams, Google Meet) to gather live transcripts, speak text and post in the meeting chat.

Slack DMs, channels, threads and search without an OAuth app or admin approval.

Slack workspace integration.

Local access to macOS apps: Mail, Calendar, Contacts, Reminders, Notes, iMessage, Finder, Safari, OmniFocus, Teams, Outlook, OneDrive and Office documents.

Manage WhatsApp Business message templates via the Meta Cloud API: create, validate and send all template types, including carousel, catalog and flows.

Search an Outlook inbox, send emails, schedule meetings, manage contacts and configure mailbox settings.

Unified email across Gmail, Outlook, iCloud and generic IMAP/SMTP: search, send, organize and batch-manage messages, with encrypted credential storage.

Email for AI agents: send and receive as Markdown with configurable human oversight (monitor, gate or fully autonomous).

IMAP/SMTP email MCP server with App Passwords (no OAuth2). Auto-discovers Gmail, Outlook, Yahoo, iCloud. 5 composite tools: search, read, send, reply, forward.

Telegram via MTProto: read chats, search messages, download media and manage contacts, with QR code login.

Multi-guild Discord management: messages, channels, roles, forums, webhooks and moderation.

Middleware exposing aiogram Telegram bots via MCP: messaging, rich media, moderation, keyboards, real-time events, rate limiting, permissions and audit logs.

Interact with Discord and automate tasks.

Read, search and send email with Zoho Mail.

Connect to Microsoft Office and the Microsoft 365 suite via the Graph API, including Outlook mail, files, Excel and calendar.

Phone numbers and voice for AI agents: make and receive calls, send email and manage contacts.

Full Gmail operations via Unipile API: send, reply, list, read, delete, search, manage labels, attachments, and drafts. Dry-run by default on destructive action

Interact with JMAP (JSON Meta Application Protocol) email servers.

Manage NAVER WORKS messages, calendar, drive, mail, tasks and boards, also available as a CLI.

Read Outlook email attachments via Microsoft Graph, parsing PDF, Word (including embedded images), Excel and text files into structured content.

Use Weaviate collections as a knowledge base and as a chat memory store.