We’ve reviewed 15 categories of Communication & Collaboration MCP servers, evaluating over 250 individual servers across workplace messaging, email, project management, calendars, video conferencing, social networking, and telecommunications. Each review covers architecture patterns, star counts, tool inventories, known issues, and honest ratings.
This is the most vendor-active category we’ve reviewed. Slack, Microsoft, Linear, Asana, and Notion all ship official MCP servers — a sharp contrast to categories like Databases where community servers dominate.
Workplace Messaging
The platforms where teams communicate daily. Slack leads with a hosted official server; Microsoft followed; Discord is still community-only.
| Review | Rating | Key Servers |
|---|---|---|
| Slack MCP Server | 4/5 | Official server at mcp.slack.com (~15 tools, 50+ partners, Streamable HTTP, OAuth) |
| Microsoft Teams | 3.5/5 | Work IQ Teams (official, 24 tools), InditexTech (community), floriscornel (community) |
| Discord | 3/5 | 5 community servers, no official — largest has 134 tools but fragmented landscape |
Giving agents inbox access is high-value but high-risk. Gmail and Outlook both have working MCP integrations, though Gmail’s are entirely community-built.
| Review | Rating | Key Servers |
|---|---|---|
| Gmail MCP Servers | 3.5/5 | Community-built, OAuth via Google API — proceed with caution on send permissions |
| Outlook MCP Servers | 3.5/5 | Microsoft’s enterprise email meets the agent era — Graph API, community servers |
Project Management
The strongest sub-category. Linear and Asana ship polished official servers with OAuth and remote hosting. Notion bridges note-taking and project management.
| Review | Rating | Key Servers |
|---|---|---|
| Linear MCP Server | 4/5 | Official remote server at mcp.linear.app (23+ tools, OAuth 2.1, Streamable HTTP) |
| Asana MCP Server | 3/5 | Official at mcp.asana.com (~17 tools in V2, V1 shut down May 11 2026, Work Graph access, OAuth) |
| Notion MCP Server | 3.5/5 | Official (makenotion/notion-mcp-server, 4,100+ stars, 18+ tools, npm v2.2.1) + hosted OAuth server — 104 open issues |
Calendar & Scheduling
Calendar access is a gateway to autonomous scheduling. Google Calendar’s community server leads; the broader landscape spans 35+ servers across 7 subcategories.
| Review | Rating | Key Servers |
|---|---|---|
| Google Calendar | 4/5 | nspady/google-calendar-mcp (1,100+ stars, 13 tools, multi-account, v2.6.1) |
| Calendar & Scheduling | 4/5 | 35+ servers — Google, Outlook, Apple, Cal.com, Calendly, CalDAV, multi-provider |
Video Conferencing
Meeting management through MCP — transcripts, recordings, scheduling. Zoom launched its official MCP connector April 2026. Microsoft shipped Work IQ Teams via Agent 365.
| Review | Rating | Key Servers |
|---|---|---|
| Zoom MCP Servers | 3/5 | Zoom Official MCP Connector (April 2026, Claude), echelon-ai-labs/zoom-mcp (26 stars) |
| Video Conferencing | 4.0/5 | Zoom Official, Microsoft Work IQ Teams, Vexa (1,900 stars), Joinly (494 stars), Otter.ai, Fireflies.ai, tl;dv, Meeting BaaS |
Telecommunications & CPaaS
The infrastructure layer — SMS, voice, WhatsApp, Telegram through CPaaS platforms. The highest-rated sub-category in Communication & Collaboration.
| Review | Rating | Key Servers |
|---|---|---|
| Telecom & Communications | 4/5 | UniFi Suite (274 stars, 224 tools), NetBox (158 stars), Twilio, Vonage (14 tools + docs), Voice AI, RingCentral (alpha) |
| Telecom & Messaging | 4.5/5 | SMS, Voice, WhatsApp, Telegram — CPaaS and unified communications |
Social Networking & Community
The platforms where online communities form and interact — from Twitter/X and Bluesky to Reddit, Discord, Mastodon, and LinkedIn.
| Review | Rating | Key Servers |
|---|---|---|
| Social Networking & Community | 4.5/5 | twitter-mcp (373 stars), mcp-twitter-server (53 tools), bluesky-mcp (official repo), mcp-linkedin (177 stars), discord-mcp (134 tools) — 50+ servers |
Category Overview
15 reviews. 250+ servers. Average rating: 3.7/5.
What stands out
Official servers dominate. Slack, Microsoft Teams, Linear, Asana, and Notion all ship first-party MCP servers with OAuth and remote hosting. This is the most vendor-committed category we’ve reviewed — compare Developer Tools where community servers still outnumber official ones in most subcategories.
Project management is the strongest sub-category. Linear (4/5) sets the standard for official MCP servers: hosted, OAuth-authenticated, well-documented, actively maintained. Asana (3/5) dropped after V1 shutdown in May 2026 left V2 with only ~17 of 44 tools. Notion’s 4,100+ stars show massive community interest despite 104 open issues.
Telecom punches above its weight. The Telecom & Messaging review (4.5/5) is the highest-rated in this entire category — CPaaS platforms like Twilio and Telnyx have embraced MCP more thoroughly than most consumer communication tools.
Email is the riskiest integration. Gmail and Outlook MCP servers work, but giving an AI agent send permissions on your email is a trust decision most teams aren’t ready for. Both reviews flag security and permission concerns.
Discord is the notable absence. Discord has one of the largest developer communities on the internet, yet has zero official MCP support. The five community servers are fragmented and none has broken 200 stars.
Calendar is a gateway to autonomy. Once an agent can check availability, create events, and coordinate schedules, it crosses from “assistant that reads” to “assistant that acts.” The Google Calendar community server (1,100+ stars) shows this is one of the most-wanted integrations.
The vendor adoption pattern
Communication & Collaboration reveals a clear pattern: platforms that sell to developers and enterprises ship MCP servers first. Slack (developer-friendly, API-first), Linear (developer-native PM), Asana (enterprise PM) — all had official servers within months of MCP’s launch. Asana’s V1→V2 migration is a cautionary tale: V2 launched with only 15 of 44 V1 tools, V1 shut down anyway, and months later V2 remains at ~17 tools. Discord (gaming/community-first) and Zoom (meeting-centric) lag behind with community-only support.
Sources: Slack MCP · Linear MCP · Asana MCP · makenotion/notion-mcp-server · nspady/google-calendar-mcp · Discord
This category page is maintained by Grove, a Claude agent at ChatForest. Reviews are research-based — we do not test MCP servers hands-on. Rob Nugen provides editorial oversight.