AI agents
Give your AI agent
WhatsApp and email
One hosted MCP server, two channels, your own number and mailbox. Connect Claude, ChatGPT, Claude Code, Cursor or n8n in a few minutes, without running a WhatsApp bridge yourself.
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GeminiThe idea
What does it mean to give an agent WhatsApp and email?
An AI agent is a model that can act: it calls tools, reads the result and decides the next step. Giving it WhatsApp and email means handing it tools to read and send messages on those two channels, and with the Model Context Protocol one server can provide both.
Most setups today stitch several pieces together: a WhatsApp MCP server you host yourself, a separate email server for IMAP and SMTP, and a WhatsApp session to keep alive on your machine. Each has its own login, its own failure modes and its own idea of who a contact is.
UnlimitedMessaging puts both channels behind one hosted server, https://mcp.unlimitedmessaging.app. The agent sees a send-message tool that sends WhatsApp, email or both, from your own WhatsApp number and your own mailbox, and a list-messages tool that reads what came back. Nothing to run, and OAuth instead of keys pasted into a config file.
MCP is now hosted by the Linux Foundation's Agentic AI Foundation, which counted more than 10,000 active servers in December 2025. Claude, ChatGPT, Claude Code and Cursor all speak it. For tools that don't, the same actions exist as a REST API, TypeScript and Python SDKs and an n8n node.
Use cases
What agents do with WhatsApp and email
- Tell you on WhatsApp when a long Claude Code task finishes or fails, so you can leave your desk.
- Prepare a morning digest of unanswered emails and WhatsApp messages, with drafted replies for you to approve.
- Follow up a lead: a short WhatsApp message and the quote by email, in the same request, from your own accounts.
- Read a support inbox and answer on the channel the customer used, with a human checking before anything goes out.
Two ways to wire it
Self-hosted MCP servers or one hosted server
Open-source WhatsApp and email MCP servers exist and work. Here is what changes when the two channels live in one hosted service.
| Self-hosted serversone per channel, on your machine | UnlimitedMessaging MCPhosted, WhatsApp + email | |
|---|---|---|
| Channels | One server per channel | WhatsApp and email in one server |
| Hosting | Your computer or a VPS, always on | Hosted, nothing to run |
| WhatsApp session | A local bridge you restart and re-link | Kept online by the service |
| Sign-in | Tokens or passwords in a config file | OAuth, revocable from your account |
| Incoming messages | The agent polls the bridge | list-messages tool, or a webhook on Medium and Max |
| Cost | Free software, your infrastructure | Free plan, Medium at €19 or Max at €29 a month |
Setup
Connect your agent in a few minutes
- 01
Link your accounts
Create a free account at app.unlimitedmessaging.app, scan the QR code to link your WhatsApp number, and connect your mailbox over IMAP/SMTP (Gmail with an app password, or any provider).
- 02
Claude or ChatGPT
Add a connector with the URL https://mcp.unlimitedmessaging.app, then approve the OAuth sign-in. See our Claude and ChatGPT guides for the screens.
- 03
Claude Code
Run: claude mcp add --transport http unlimited-messaging https://mcp.unlimitedmessaging.app - then type /mcp in a session and sign in in the browser.
- 04
Cursor
Add the server to .cursor/mcp.json: {"mcpServers": {"unlimited-messaging": {"url": "https://mcp.unlimitedmessaging.app"}}} - Cursor lists its tools once you sign in.
- 05
n8n or your own code
Use the n8n-nodes-unlimited-messaging node, or call POST /message from the REST API or the TypeScript and Python SDKs.
FAQ
AI agents, WhatsApp and email: your questions
Sources
Sources & references
To check the information in this article for yourself:
Written by
Ilian · Senior Software Engineer
A senior software engineer, he founds and runs several tech companies. He builds products around messaging APIs, automation and AI integration, and shares here what he learns while building.
Give your agent WhatsApp and email
Free plan, no credit card. Link your number and mailbox, then add one MCP server.