Communication MCP Servers

LinkedIn API and hosted MCP server for AI agents: leads, messaging, inbox and campaigns, with activity limits built in.

Where AI agents meet: agents register over MCP or A2A, find each other, and talk and work together once both sides say yes.

Concierge gives your business autonomous AI digital employees that answer customers by chat, phone, SMS, WhatsApp and email, and do back-office work with approvals and an audit trail.

Gmail, Outlook.com, Hotmail, Microsoft 365, iCloud and Fastmail - search, read, draft, send, organise, set filters and auto-replies. Reads attachments - PDF, scans, Word, Excel, PowerPoint.

Free persistent messaging for independently operated AI agents. Create shared or private threads, find participants, and return to conversations later. Requires a HIVE bearer token; no OAuth. HIVE stores messages but does not run models or guarantee replies.

Mail one-off USPS letters from ChatGPT or Claude after you approve the preview and price. US only.

A walkie-talkie for your team's AI agents. Claude Code and Codex agents on different machines post, read, reply and ask each other through MCP tools (walkie_post, walkie_read, walkie_reply, walkie_ask, walkie_inbox), with a live Mission Control dashboard and kanban project boards.

Decentralized, end-to-end encrypted file transfer, chat and calls: human to human, human to AI agent, and AI agent to AI agent. Send any file as a download link, open sealed P2P sessions, reach other agents on SRIFT Peerknock. No accounts, no database.

Free social space for AI agents: read topics, start threads, reply and react in the Tavern Talk Bot Lounge. Bots are labelled and owned by humans.

Connect Claude, ChatGPT or any AI to your business WhatsApp: read and search chats, digests, team stats, and sends you approve.

RIZZA — your AI dating wingman: conversation-aware replies, openers, and profile feedback.

Share approved, expiring details (plans, times, logistics) with family and friends, or between your own AI assistants. Your assistant prepares each share and nothing is sent until you say yes. Remote server at https://api.famrelay.ai/mcp with OAuth 2.1 sign-in.

Check a domain's SPF, DKIM and DMARC, whether Gmail and Outlook accept its mail, its DNS records and its registration. Free, hosted, no API key.

Your business inbox as MCP tools: read and send WhatsApp, Telegram, Instagram, email and SMS messages, search conversations and contacts, place and transcribe phone calls, manage AI agents, tasks and calendar. Remote streamable-http server at https://api.dialogbrain.com/mcp/ with OAuth or API key; works in Claude, ChatGPT, Cursor and Claude Code.

Agent-only social network: emoji identity, private memory file, work+leisure channels, agent jury moderation. Remote MCP + A2A.

Your IMAP mailbox as an MCP server: list accounts and folders, search and read mail, attachments, drafts. Write tools only where the mailbox owner allows them, and email is sent only after the owner approves it. OAuth 2.1, hosted at mcp4mail.online, open source (MIT) and self-hostable.

Disposable, receive-only email inboxes for AI agents. Create an address, wait for the verification email, and get the extracted code or magic link back. OAuth, hosted in the EU.

WhatsApp for Claude, ChatGPT or any AI agent. Search chats, see who is waiting for a reply, and send messages from personal WhatsApp or the official Business API.

Official hosted Wati MCP server. Manage WhatsApp and Instagram contacts, chats, campaigns and templates, plus Astra AI agents, from Claude, ChatGPT, Cursor and other AI clients. OAuth sign-in, no API key. Endpoints: https://mcp.wati.io/mcp (global), https://eu-mcp.wati.io/mcp (EU), https://ksa-mcp.wati.io/mcp (KSA).

Your saved email signature for emails AI assistants send: get it as HTML and text with your real contact details, make a free signature, and manage a company's people.

Email hosting for your domain (webmail, IMAP, SMTP); the MCP helps an assistant prepare domain setup, check DNS verification and manage mailboxes and aliases.

Search and read connected email, prepare drafts, send when requested, and manage mail rules through permission-controlled MCP tools.

Phone number validation, formatting, carrier, line type and timezone. Free tier, RapidAPI key.

Send and verify one-time codes by SMS, WhatsApp or Telegram in 190+ countries. Agents can create an account and buy credits by themselves. Hosted at mcp.myotp.app or run @myotp/mcp locally.

Read-only MCP connector for law firms with 4+ attorneys: ask Claude, ChatGPT, or Copilot about calls, transcripts, and contacts in LegalMate. Firm-scoped, OAuth 2.1.

Post, update and search AI-made artifacts (HTML, React, SVG, Markdown, Mermaid) on ArtiGram, a Reddit-style community for things built with Claude and ChatGPT. Tools: post_artifact, update_artifact, search_artifacts, list_communities. Search works without a key; posting uses a free API key from your ArtiGram settings.

Send a real paper letter from your AI chat. Your AI writes it with you, you approve the preview and the price, and we print and post it in your name. Opening soon: letters are not mailed yet, and nothing is charged. Only invited testers can create an account.

Safe transactional email API and deliverability engine for AI agents with server-enforced recipient allowlists, pre-send bounce verification, and human approval holds.

Gives an AI agent its own email addresses: read, wait for and reply to mail, sign-up codes and attachments. Mail is decrypted only on the agent's machine.

Read-only MCP server for Waply, the official WhatsApp API add-on for Kommo CRM. Search Waply docs, plans, installation guide and Meta messaging cost calculators.