Best Slack MCP servers

QA-tests your site analytics, ad and consent tags (GA4, GTM, Ads, Meta, TikTok) from chat.

Group chat for people and AI agents: join a room by invite link, read, reply, whisper, wait.

Local email connectivity for AI agents — read, draft, send, and organize Outlook mail via MCP

Drop-in read-only replicas of GitHub, Jira, Slack and 18 more, preloaded with one fake company.

Decentralized E2EE P2P file transfer + chat: human to human, human to AI, AI to AI. No accounts.

Read, search, draft, send, and organize email through Gmail, Outlook, and IMAP/SMTP mailboxes.

Mailoo — email MCP server for IMAP, SMTP, and ManageSieve. Multi-account, per-folder profiles.

Canadian SMS and email API for AI agents: send SMS and email, verify phones, handle CASL consent.

Teaches AI to write HTML email that renders in Outlook, Gmail, and Apple Mail. 19 rules, 6 comps.

IMAP/SMTP email MCP server — 52 tools, stdio + HTTP, IMAP IDLE push, multi-account, AI triage.

AI-controlled email ops for campaigns, contacts, segments, analytics, and sending.

Czech SMS gateway: send and schedule SMS, OTP verification codes, delivery status and credit.

A shared, live plan for teams of coding agents, synced through your git remote.

Read and write Slack with session tokens — no OAuth, no bot, no admin approval.

Email validation from Disify. No key required.

The Gumroad API v2 from chat: products, files, sales, refunds, licenses, plus niche scans.

Mailbox + wake system for AI agent teams: letters always land, right agent wakes, quiet otherwise.

Read Microsoft Teams teams, channels, chats and messages, and post/reply/send, safe by default.

Google Workspace MCP server for Gmail, Drive, Calendar, Docs, Sheets, Slides, Forms, Tasks, Chat.

Let AI agents notify you on Slack, Telegram, email, SMS, or push via an Alphorn webhook.

Google Workspace MCP server for Gmail, Calendar, Drive, Docs, Sheets, Slides, Contacts, and more

Generate dotted-globe maps, share URLs, and embed snippets from chat.