Use HEY with ChatGPT, Claude, and your other AI assistants █

• What’s new in my HEY Imbox today, and does anything need a reply from me?
• Find the email from Northwind about the invoice and draft a reply saying we’ll pay by Friday.
• Summarize the thread with Priya about the launch date and list the open questions.
• Move the newsletters in my Imbox to The Feed.
• Who’s waiting in my Screener? Screen out the no-reply addresses.
• What’s on my HEY Calendar this week? Add a to-do for Friday: send the launch plan.
• Bubble up the thread with my accountant next Monday.

Most of what you do in HEY, short of sending.

• The Imbox, The Feed, and Paper Trail: catch up on what’s new, and what’s waiting for a reply.
• Search and threads: find any email by sender, subject, or what it says, and get the gist of a long thread.
• Drafts: write a new email or a reply, revise a draft, or throw one away. Every draft waits in HEY for you.
• Organizing: move threads between the Imbox, The Feed, Paper Trail, Reply Later, and Set Aside, mark them seen or unseen, add and remove labels, and Bubble Up a thread for later.
• The Screener: see who’s waiting, and screen out the senders you don’t want.
• HEY Calendar and to-dos: check your day or your week, and add, change, and check off to-dos. To-dos need Your personal calendar switched on when you authorize access.
• Contacts: look up who’s who.

It can’t delete or trash your email, and it can’t change your calendar events.

• Your access, nothing more. Your assistant can only see what you can see in HEY, in the accounts you picked, and only when you ask it something.
• Look, don’t touch, if you prefer. Turn off Write when you authorize access, and your assistant can read but can’t change a thing. Send stays off unless you turn it on.
• Strangers can’t give it orders. From senders you haven’t screened in, your assistant sees who’s waiting, but never what they wrote. And everything a sender wrote is marked as theirs, so your assistant can tell their words from yours.
• Nothing goes out on its own. Your assistant can draft, but you send.
• Revoke access anytime. In HEY, go to Login & Security → Connected Apps and click Revoke access. The app is cut off right away, in every account it reached. Revoking access doesn’t delete anything it already received, and what it did while connected stays put.
• No training, no selling. 37signals doesn’t use your connected-app activity to train AI models, and doesn’t sell it.

Your HEY data is covered by our privacy policy, HEY’s subprocessors, terms of service, and security overview. Once your assistant has received something, what it does with it is up to that assistant’s own terms and privacy policy.

This is our hosted MCP server, and it works with any app that supports MCP connectors. Point it at https://mcp.hey.com/mcp and sign in. There’s nothing to set up on our end.

Claude Code

claude mcp add --scope user --transport http hey https://mcp.hey.com/mcp

Then run /mcp in Claude Code, pick HEY, and sign in.

VS Code

Click Add HEY to VS Code, or run MCP: Add Server from the Command Palette, choose HTTP, and paste in the address. Or add it to mcp.json:

{
  "servers": {
    "hey": { "type": "http", "url": "https://mcp.hey.com/mcp" }
  }
}

Cursor

Add HEY to ~/.cursor/mcp.json:

{
  "mcpServers": {
    "hey": { "url": "https://mcp.hey.com/mcp" }
  }
}