Communication & Collaboration MCP Servers

What a communication and collaboration MCP server does

When an assistant like Claude or Cursor summarizes a Slack thread or drafts an email, a Model Context Protocol connector is doing the plumbing. A communication MCP server sits between the model and your workspace tools — team chat platforms such as Slack, Microsoft Teams and Discord, mailboxes on Gmail or Outlook, meeting and video suites like Zoom and Google Meet, plus the calendars behind them. It stores the OAuth token or API key, exposes a fixed set of actions (search mail, read a channel, post a message, book a slot), and executes whatever the assistant requests within those scopes.

Workflows the best team chat and email MCP servers unlock

• Inbox and channel triage — condense an overnight Slack channel or an overflowing mailbox into action items and draft replies for you to approve.
• Scheduling without the back-and-forth — check availability across calendars, propose times, create the meeting and send invites in one pass.
• Conversation to follow-through — pull decisions out of a thread or meeting transcript and turn them into follow-up messages, tickets or summaries.

The security stakes in this category are unusually high. Messaging scopes tend to be broad, so a malicious or over-permissioned server could read entire DM histories and mail archives, quietly forward them elsewhere, or send messages that appear to come from you. Email is also the recovery channel for nearly every other account — including the payment platforms under Finance & Commerce — so inbox access can escalate into account takeover. And every incoming message is untrusted text: a stranger's email can smuggle instructions aimed at the model, a risk that compounds when paired with AI, Memory & Reasoning servers that persist what the assistant reads.

Each listing here therefore carries a Trust Score produced by the deterministic mcptrustchecker engine — a rule-based pass over the published package that maps its real blast radius, documented under how the scoring works. Compare graded options across the MCP Trust Registry before wiring anything into a live inbox.

Is it safe to connect an MCP server to my Slack or email account?

It can be, if you treat the server like any privileged integration. Prefer packages with a strong Trust Score and narrow scopes — read-only where possible — and review outbound messages before they go out. Avoid servers whose findings show network calls or permissions unrelated to their stated purpose.