MCP servers · Communication

50 listings on this page, in order of arrival. Each one has its own page with README, repository facts and source links.

1. Chamade
   Voice and chat for AI agents — Discord, Teams, Meet, Slack, Zoom, Telegram, WhatsApp, NC Talk, SIP
2. DevInbox
   Real email inboxes for AI agents: create inboxes, catch verification codes, extract OTPs, reply.
3. VoIP.ms
   Manage phone numbers, SMS/MMS, voicemail, faxing, and call routing for your VoIP.ms account.
4. io.foqal/Foqal
   Foqal turns Slack/Teams into efficient support platforms with AI-powered ticketing.
5. io.github.0xka13b/microsoft-outlook-mcp
   Microsoft Outlook (mail) MCP server — read, search, and send email through Microsoft Graph.
6. io.github.0xka13b/ms-calendar-mcp
   Microsoft Calendar (Outlook Calendar) MCP server for managing events via Microsoft Graph.
7. io.github.AINative-Studio/ainative-zerodb-memory-mcp ★ 1
   ZeroDB agent-memory MCP — 18 tools: memory + write-back to Slack, Gmail, Calendar, GitHub.
8. AIPost MCP Server
   Typed structured messaging for AI agents via AIPost.email with Ed25519 signing
9. io.github.AIWerk/mcp-server-imap ★ 1
   Email tools for any IMAP/SMTP provider: list, read, search, send, and manage messages.
10. io.github.ARCXS-Protocol/mcp-server
    The DNS/SMTP for AI agents: cross-protocol discovery, messaging and transactions. No middleman fees.
11. AgentLine
    Give AI agents a phone number. Voice calls, SMS, and phone number management for MCP clients.
12. io.github.Alexendros/proton-mail-mcp
    Proton Mail MCP via Bridge (IMAP/SMTP) · 13 tools · dual transport stdio + HTTP.
13. io.github.Ali1041/leadloadz
    B2B lead search and email verification MCP server
14. io.github.ArtyMcLabin/Gmail-MCP-Server ★ 237
    Lean Gmail MCP server with auto authentication support
15. Atomic Mail ★ 264
    Programmable email inbox for AI agents — JMAP, PoW auth, stdio MCP server.
16. io.github.Bluecraft-AI/cold-email ★ 2
    Generate hyper-personalized cold email sequences via AI.
17. io.github.Bluecraft-AI/machfive ★ 2
    Generate hyper-personalized cold email sequences via MachFive API.
18. Email Deliverability Audit API
    Audit email domain deliverability: SPF, DKIM, DMARC, MX. Score 0-100. x402.
19. Email Finder API
    Find email addresses from name and company domain. x402 paid.
20. Email Send API
    Send emails programmatically via Resend. Text and HTML. x402 micropayment.
21. SMS Validator API
    Validate SMS-capable phone numbers — mobile vs landline, E.164 format. x402 micropayment.
22. io.github.Braynexservices/nigeria-imf-weo
    IMF World Economic Outlook for Nigeria (growth, inflation, debt, more). Keyless.
23. io.github.CSOAI-ORG/email-automation-mcp
    Email Automation MCP Server by MEOK AI Labs
24. io.github.CSOAI-ORG/email-validator-ai-mcp
    Email Validator Ai MCP Server by MEOK AI Labs
25. io.github.CSOAI-ORG/slack-enterprise-mcp
    Slack Enterprise MCP Server by MEOK AI Labs
26. io.github.CSOAI-ORG/validator-ai-mcp
    AI-powered validator ai MCP server for agents. Supports validate json, validate email, validate
27. SendGrid Secure
    Security-first SendGrid MCP server: dry-run default, recipient allowlists, rate caps, audit log.
28. Pusher Channels ★ 3
    Trigger events, query channels, and manage realtime messaging on Pusher Channels.
29. io.github.Creativestefan/mailbridge ★ 2
    Connect your AI assistant to email — read, search, send, and organise via IMAP/SMTP.
30. Guesty MCP Server ★ 6
    Guesty MCP server. 43 tools, all free: reservations, listings, guests, messaging, pricing, revenue.
31. io.github.Davison-Francis/deliveriq-mcp ★ 1
    Email deliverability for AI agents. 12 tools: verify, DNSBL, DMARC, spam-trap, finder.
32. io.github.EmperorMew/voidly-mcp-server
    83 tools: censorship intelligence (119 countries) + E2E encrypted agent messaging
33. AgentPhone-Apex
    Multi-channel voice and SMS gateway interface for AI communication.
34. DocDigest
    Corporate email and chat thread summarization parser.
35. Email Verification MCP
    Verify emails — deliverability, disposable/role/free detection, MX validity, domain age.
36. AgentPub
    Private agent messaging: DMs, group channels, presence, search, and webhooks over MCP or REST.
37. MAILTYPE — Email Domain Capability Intelligence
    Email-domain intelligence: MX capability, provider, disposable status, SPF, DMARC, and MTA-STS.
38. io.github.GeiserX/telegram-archive-mcp ★ 4
    MCP server for Telegram Archive — search messages, browse chats, and access history
39. Dial
    Communication stack for AI agents: SMS, AI voice calls, phone numbers, and account events.
40. HQBase ★ 320
    Connect AI agents to your self-hosted HQBase shared email workspace.
41. WhatsApp Connect ★ 2
    Read, search, and send personal WhatsApp messages from any MCP client, behind a send-confirm gate.
42. WhatsApp MCP by TimelinesAI
    Drive your real WhatsApp inbox from Claude — send, reply, label, assign, and triage via TimelinesAI.
43. io.github.Integrity-Os/deliverability-doctor
    Check if a domain can be email-spoofed: SPF, DMARC, DKIM, MX graded from public DNS. Authless.
44. io.github.IntelagentStudios/mcp-enrichment
    Multi-source entity enrichment: company data, contacts, email verification, and phone validation
45. io.github.IvanBBaev/facebook-mcp ★ 1
    Facebook Pages MCP server for the Meta Graph API — publishing, insights, moderation, messaging
46. io.github.JKHeadley/threadline-mcp ★ 77
    Agent-to-agent messaging relay. Discover agents, send messages, and receive replies. Zero-config.
47. io.github.JMLEE850623/talktoplanb-mcp
    MCP server for TalkToPlanB: list rooms, read & send messages (WhatsApp alternative).
48. Apple Mail ★ 12
    Read, search, compose, and send emails via Apple Mail on macOS.
49. tgden — Telegram catalog & search
    Search 1.2M+ Telegram channels, 245k+ chats, 160k+ bots — no account, no key, no install.
50. KeyID
    Signup sessions, browser continuity, email, SMS, and OTP/TOTP infrastructure for AI agents.