Best Communication MCP servers, ranked by reliability
Integrations with Slack, Discord, email, and collaboration tools so agents can read, send, and manage messages. Below: the top 1 communication MCP servers on MCPfinder right now, ranked by our public reliability score — the same number you'd use to decide if something belongs in production.
- 191/100SlackSend, read, and search Slack messages from your agent.NODE· TypeScript· MIT
Frequently asked questions
What makes a communication MCP server "best"?+
We rank by reliability score — a 0–100 rating based on repository health, release cadence, documentation quality, and maintainer responsiveness. Marketing budget doesn't factor in.
Are these MCP servers free?+
Yes, every MCP server on this list is open source and free to self-host. Some vendors also offer paid hosted versions with additional features.
How often is this list updated?+
The reliability score for every listed server is recomputed every 24 hours. If a server's score drops below 40, it's flagged and removed from this list until fixed.
Can I get my server onto this list?+
Submit it at /submit. If it passes our hard gates (license, readme, recent activity) and scores above 80, it's eligible for the top list automatically.