Communication Servers

Slack

Experience the most powerful MCP server for Slack workspaces with advanced message and channel support. This feature-rich server allows fetching messages from channels, threads, DMs, and group DMs with embedded user info and smart history pagination by date or count. It supports enterprise workspaces, caching for faster access, and flexible transports like Stdio and SSE with proxy settings. Designed for stealth operation or secure access via OAuth, it integrates channel and thread lookups by name or ID to give rich, contextual Slack workspace data efficiently and reliably. Perfect for developers needing robust Slack data handling.

Provides a bridge between Microsoft 365 services and natural language interfaces, enabling access to email, calendar, OneDrive files, and Excel operations through the Microsoft Graph API with simplified authentication and parameter handling.

Integrates with Microsoft Teams through Graph API to search messages, manage chats and channels, send messages, create group chats, and handle user/team operations with device code authentication for secure access.

Manage your emails effortlessly with a standardized interface for drafting, sending, retrieving, and organizing messages. Streamline your email workflow with complete Gmail API coverage, including label and thread management.

Integrates with Discord through Discord.js to provide comprehensive bot capabilities including message management, channel operations, forum posts, reactions, webhooks, and server administration with automatic reconnection and rate limiting protection.

Provides multi-channel notification capabilities through desktop notifications, email via SMTP, and HTTP API endpoints with a single tool that simultaneously delivers alerts across all configured channels.

Feishu/Lark

Official

Integrates with Feishu/Lark's collaboration suite, enabling AI assistants to interact with productivity tools through the official Node.js SDK.

Bridges AI with Telegram to enable monitoring, organizing, and responding to messages through account access, dialog management, and conversation handling capabilities

Enables AI to compose and send emails through the Resend API with customizable sender addresses, reply-to fields, and scheduled delivery options

Interact with X (Twitter) by posting tweets and searching for tweets through the X API.

Enables sending push notifications through the ntfy service with customizable titles, summaries, priority levels, and tags for alerting users about completed tasks or status updates.

Enables sending customizable messages to external webhook endpoints, facilitating automated notifications and workflow integrations.

Integrates WeCom (WeChat Work) bot functionality for enterprise messaging, notifications, and interactive chatbots.

Enables Claude and other assistants to send SMS and MMS messages through Twilio's API with phone number validation and specialized prompts for greetings and haikus.

Integrates with RetellAI's voice services for creating and managing phone conversations, enabling call initiation, agent configuration, and voice selection for tasks like customer service, appointment scheduling, and information gathering.

Mailtrap Email API

Official

Enables sending transactional emails through the Mailtrap Email API.

Enables reading and sending Instagram direct messages through a Python server that authenticates with Instagram cookies and provides tools for retrieving recent conversations and sending new messages.

Provides a bridge between Zoom API and virtual meeting management, enabling creation, updating, deletion, and fetching of meetings without navigating the Zoom interface or handling authentication flows.

Integrates with VOYP API to enable automated call handling, routing, and intelligent voice responses for enhanced call center operations.

Integrates with Asterisk phone systems to enable outbound call operations, conversation monitoring, call history retrieval, and telephony system metrics tracking for business automation workflows.

Integrates with Bluesky's social network API to enable profile management, posting, following, and engagement actions.