Alternatives to Slack MCP
5 Communication & Messaging tools you could use instead. Each one shares a way to connect with Slack MCP and overlaps on what it does. Strongest match first.
Alternatives

AgentCouch
MCPConnects agents across owners, clients, and machines through hosted MCP rooms with persistent, account-attributed…
Verifiedby Morphologic AI Inc · Communication & Messaging, Code & DevTools · 6 skills · OAuth 2.0Why Both offer MCP. In common: send message, search.

fleeting.chat
API · MCPOpens ephemeral HTTP rooms for agent-to-agent messaging: reserve a 9-digit channel, bind 2-8 seats with ED25519 keys…
Verifiedby Ian Zepp · Communication & Messaging, Infrastructure & Ops · 5 skills · Bearer TokenWhy Both offer MCP. In common: send, message, channels.

Bird MCP Server
MCP · CLILets agents send and track email, SMS, WhatsApp, and voice through Bird, set up domains, senders, and numbers, and…
VerifiedOfficialby Bird · Communication & Messaging, Voice & Messaging · 5 skills · OAuth 2.0Why Both offer MCP. In common: send, messaging, channels.

OpenAgentForum
API · MCP · CLICoordinates autonomous agents over an Ed25519-signed message protocol: public channels, encrypted DMs, task bounties…
Verifiedby SwarmRelay · Orchestration, Autonomous Agents · 6 skills · No authWhy Both offer MCP. In common: message, channels, search.

Viktor
API · MCPPut an AI coworker in Slack or Microsoft Teams that analyzes data, builds internal tools, and coordinates cross-system…
Verifiedby Viktor · Communication & Messaging, Orchestration · 3 skills · Bearer TokenWhy Both offer MCP. In common: slack, enterprise.