Communication MCP Servers

Email inboxes for AI agents, by the hour: an address of your choice, one call to wait for a message, the code or link extracted. No account, paid per call with x402 stablecoins.

Group chat where people and AI agents talk in the same room. Agents join by invite link, read and reply, wait for new messages, and send end-to-end encrypted whispers to one member. Install: npx -y huddoai mcp

Remote MCP server for Chatway live chat and customer support. Read conversations, reply, resolve and assign chats through AI assistants. OAuth authentication, scoped permissions and a Free plan.

Shared rooms where AI agents from different vendors (Claude, ChatGPT, Gemini CLI, Cursor, Claude Code and others) and their people work together: full history, tasks, peer review and results. Join from one invite link; each owner controls their AI. Free, Apache-2.0.

Local Telegram MTProto MCP for Codex: read-only by default, optional text writes with exact chat allowlists, and English/Russian setup for Windows, Linux and macOS. Review Telegram API/AI terms before using real data.

Prepare and track faxes from your AI assistant: fax a letter the assistant writes, or upload a PDF, signed form or scan. No account, API key or subscription; review the fax and price, then pay in your browser before sending.

Instinctpath gives your AI agent a place to post and search ads. When it finds the right one, it messages the agent behind it, and the two work out the details.

A public message board for AI agents. Every post is signed with the author's own key and kept in an append-only log anyone can verify. Read, verify, enrol and post as tool calls.

A hosted LinkedIn MCP server for your own account. Paste one address into Claude, ChatGPT, Cursor or n8n to read your inbox, send messages and invitations, and search people. Free to start. Not made by LinkedIn.

Run free live audience Q&A and polls from your agent: start an AskOne room, add and launch a poll, approve or hide questions and mark them answered, close the room, then read the questions as a FAQ draft and get the results. Free AI moderation (optional). Uses an organization API token from askone.org

Nitrosend's official remote MCP server. Your agent drafts campaigns, builds automation flows, segments contacts and sends transactional email from Claude, ChatGPT, Cursor or Codex. OAuth, free plan.

Create, design and send digital invitations, manage guests, and track RSVPs directly from your AI assistant.

wecallio is an MCP server that lets Claude, ChatGPT or Gemini place real phone calls on your behalf and report back with a written summary.

Where AI agents find each other. Your agent posts what you offer or need, searches other posts by meaning, and messages the agents behind them. You approve every post.

Send and receive email from your verified domains; manage domains, templates and deliverability.

Build and manage voice AI agents for real phone lines: assistants, calls, numbers and campaigns.

Connect your communications to your AI. Telecom operating layer for AI agents: calls, SMS, numbers, voicemail and phone system via a remote MCP server with OAuth. Connecting an AI is free; the user pays for Widely membership and usage. (Resubmission: contact is shmaya@widely-mobile.com, replaces the earlier entry using info@.)

Voice AI telephony from your assistant: place and end real phone calls, read call transcripts, run a live two-language interpreter, and search, buy and bind phone numbers. 37 tools, OAuth 2.1 with PKCE.

Let your AI agent reach real, verified people and their agents. Search members, write to them (or email people not on Raltan) once you approve the exact words, and ask other members' agents questions. Remote MCP with OAuth sign-in.

Find specific executives, operators and domain experts, then invite them to a paid short call or written answer. Pay only if they book or answer.

Communication suite between agents

Your AI rings your iPhone, speaks its question, and gets your spoken answer back as text.

Physical mail for AI agents

Hosted two-way SMS bridge between a phone and coding agents.

Let your agent call businesses for you. A voice assistant places the call, works phone menus, waits on hold, asks your agent mid-call when needed, and returns a transcript plus answers. Remote MCP with zero-input OAuth. $1 per answered call, free demo line.

Connect AI assistants to your Skysay workspace to inspect and manage voice agents, phone numbers, calls, SMS and campaigns through OAuth or scoped API keys. Number availability, capabilities and verification requirements vary by country. 100+ countries covered.

One inbox for all your addresses: your AI agent reads, sorts, drafts and sends with your permission.

Read WhatsApp conversations and analytics, and manage AI assistant rules in Atendio, a WhatsApp AI chatbot.

Quote available handwritten cards, open a private review link, and read owned order status.

Review saved podcast rundowns and transcripts, and prepare private episode drafts.