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Best Communication MCP Servers in 2026
7 min read ·
The Google Workspace MCP server by taylorwilsdon is the best communication MCP server in 2026, with 2,737 GitHub stars as of July 2026, the highest of any communication server in the Remote OpenClaw directory of 13,870 servers. It connects agents to Gmail, Google Calendar, Drive, and Docs through a single OAuth login, which covers email plus scheduling in one install. Below it sit five more picks for Slack, Telegram, Microsoft Teams, Discord, and SMS, ranked by GitHub stars and verified against each repository's README on July 4, 2026.
How We Ranked Communication MCP Servers
Communication MCP servers are ranked here by GitHub stars, maintenance activity, and platform coverage, all checked against each repository on July 4, 2026, using the Remote OpenClaw Communication directory as the source list. We picked one strong server per major platform instead of listing six Slack forks, so the result covers email, team chat, community chat, and SMS in a single kit.
One honesty note on keys: none of these servers is keyless. Every one reads or sends messages on your behalf, so each needs an OAuth grant, a bot token, or session credentials. That is unavoidable for a category built on private inboxes and channels, and it makes credential scoping the most important setup step.
The 6 Best Communication MCP Servers in 2026
These six servers cover email and calendar, Slack, Telegram, Microsoft Teams, Discord, and SMS. Install commands were verified against each repo's README in July 2026 and use the claude mcp add syntax for Claude Code.
1. Google Workspace MCP - email, calendar, and Drive
The Google Workspace MCP (2,737 stars) gives agents access to Gmail, Google Calendar, Drive, Docs, Sheets, and Slides behind one OAuth 2.1 flow. Start the server in HTTP mode, then register it with Claude Code. Directory page: taylorwilsdon/google_workspace_mcp.
uvx workspace-mcp --tool-tier core
claude mcp add --transport http workspace-mcp http://localhost:8000/mcp2. Slack MCP Server - team chat
The community Slack MCP Server (1,680 stars) reads channels, threads, and DMs using OAuth or browser session tokens, with message search that official bot tokens cannot match. It runs over stdio with no separate app to deploy. Directory page: korotovsky/slack-mcp-server.
claude mcp add slack -- npx -y slack-mcp-server@latest --transport stdio3. Telegram MCP - personal and bot messaging
Telegram MCP (1,237 stars) connects to your full Telegram account through the MTProto API, so agents can read chats, send messages, and manage groups. Clone the repo and run it with uv; the README warns against installing the uvx telegram-mcp package because that PyPI name belongs to a different project. Directory page: chigwell/telegram-mcp.
claude mcp add telegram -- uv --directory /path/to/telegram-mcp run main.py4. Microsoft Teams MCP - enterprise chat
The Microsoft Teams MCP Server (379 stars) from Inditex reads and posts messages, replies in threads, and mentions members inside Teams channels. It runs with uv locally or as a prebuilt Docker image from GitHub Container Registry. Directory page: InditexTech/mcp-teams-server.
claude mcp add teams -- uv run mcp-teams-server5. Discord MCP - community servers
Discord MCP (373 stars) lets agents send and read messages, manage channels, and handle reactions across a Discord guild using a bot token. Run it as a Docker container in HTTP mode, then point Claude Code at the local endpoint. Directory page: SaseQ/discord-mcp.
claude mcp add discord-mcp --transport http http://localhost:8085/mcp6. Twilio MCP - SMS and voice
The official Twilio MCP (107 stars) from Twilio Labs exposes the Twilio API so agents can send SMS, place calls, and manage phone numbers. It authenticates with your Account SID and an API key pair passed on the command line. Directory page: twilio-labs/mcp.
claude mcp add twilio -- npx -y @twilio-alpha/mcp ACCOUNT_SID/API_KEY:API_SECRETComparison Table: Communication MCP Servers at a Glance
The table below compares all six picks on stars, credentials, and hosting model, with star counts current as of July 4, 2026.
| Rank | Server | Best for | Stars (Jul 2026) | Auth | Runs |
|---|---|---|---|---|---|
| 1 | Google Workspace MCP | Email and calendar | 2,737 | OAuth | Local (HTTP) |
| 2 | Slack MCP Server | Team chat | 1,680 | OAuth or session | Local (stdio) |
| 3 | Telegram MCP | Personal messaging | 1,237 | MTProto login | Local (uv) |
| 4 | Microsoft Teams MCP | Enterprise chat | 379 | Bot credentials | Local or Docker |
| 5 | Discord MCP | Community servers | 373 | Bot token | Docker (HTTP) |
| 6 | Twilio MCP | SMS and voice | 107 | SID and API key | Local (npx) |
Browse the Communication Category
The Remote OpenClaw directory groups 418 servers into the Communication category, each with a detail page showing stars, transport, and the exact install command. For a deeper comparison of the chat-first servers, our dedicated guide breaks down Slack, Discord, and email options with usage notes.
- Best MCP servers for communication: Slack, Discord, and email
- Best MCP servers in 2026, the complete ranked list across every category
- Best free MCP servers for the no-key tools that pair with these
You can also package your own outreach or inbox workflows as reusable agent skills and list them on the Remote OpenClaw marketplace.
Limitations and Tradeoffs
Communication MCP servers read private messages and can send on your behalf, so the main tradeoff is privacy exposure rather than capability. A single OAuth grant to the Google Workspace server hands an agent your entire inbox and calendar, so scope the connection to the minimum tools you need and prefer read-only tiers while testing. Our guide on securing MCP server connections covers token scoping and read-only modes.
Session-token servers like the Slack pick can break when the platform rotates cookies, and personal-account tools like Telegram MCP tie an agent to your identity rather than a bot, which some platforms restrict. Pin versions, review community source code, and use a dedicated bot account where the platform supports one. Stars measure popularity, not safety, which is why the table pairs them with the auth model.
Related Guides
- Best MCP Servers for Communication: Slack, Discord, and Email
- Best MCP Servers in 2026: The Complete Ranked List
- Best Free MCP Servers in 2026: No API Key Needed
- Claude Code MCP: How to Add and Manage MCP Servers
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What is the best communication MCP server in 2026?
The Google Workspace MCP server by taylorwilsdon is the best communication MCP server in 2026, with 2,737 GitHub stars as of July 2026, because it covers Gmail, Calendar, and Drive in one OAuth connection. For pure team chat, the Slack MCP Server leads, and for community servers the Discord MCP is the top pick.
Is there an MCP server for email?
Yes. The Google Workspace MCP server handles Gmail alongside Calendar and Drive, making it the most-starred email-capable option at 2,737 stars. It uses an OAuth login rather than an app password, and you start it in HTTP mode before registering it with claude mcp add --transport http workspace-mcp http://localhost:8000/mcp .
Can an MCP server send Slack or Discord messages?
Yes. The Slack MCP Server and Discord MCP can both read channels and send messages when given the right token, a Slack OAuth or session token for Slack and a bot token for Discord. Grant the narrowest scopes that cover your use case, since these servers act with the same permissions as the token you provide.
Do communication MCP servers need an API key?
Every communication MCP server needs credentials of some kind, so none are truly keyless. They read and send private messages, which requires an OAuth grant, a bot token, or session credentials for each platform. Treat those tokens as secrets and scope them tightly.
How do I add a communication MCP server to Claude Code?
Run claude mcp add <name> -- <command> for local servers, for example claude mcp add slack -- npx -y slack-mcp-server@latest --transport stdio , or claude mcp add --transport http <name> <url> for HTTP servers like Google Workspace. Our Claude Code MCP guide walks through scopes, environment variables, and troubleshooting.