Integrations

Your mail, wherever you work.

Let your AI tools read, send and organize mail on your own domain, and choose the AI model behind 3ʙɪ Mail's helpers.

MCP for developers Meta Muse

MCP server

3ʙɪ Mail speaks the Model Context Protocol (Streamable HTTP). Any MCP client can connect with a personal access key.

Read mail

list_addresses, list_emails, get_email — search any folder or address and open messages.

Send mail

send_email — send or reply from your own-domain addresses and aliases.

Organize

move_emails, mark_read, report_spam, not_spam — keep the inbox tidy.

Create a key in 3ʙɪ Mail → Integrations. Pick what it can do: read, send, organize. The key is shown once.
Add the server https://3bi.io/api/public/mcp to your tool with the header Authorization: Bearer YOUR_KEY.

Cursor / Windsurf / VS Code

{
  "mcpServers": {
    "3bi-mail": {
      "url": "https://3bi.io/api/public/mcp",
      "headers": { "Authorization": "Bearer YOUR_KEY" }
    }
  }
}

Claude Desktop

{
  "mcpServers": {
    "3bi-mail": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://3bi.io/api/public/mcp",
               "--header", "Authorization: Bearer YOUR_KEY"]
    }
  }
}

Test with curl

curl https://3bi.io/api/public/mcp \
  -H "Authorization: Bearer YOUR_KEY" \
  -H "Content-Type: application/json" \
  -H "Accept: application/json, text/event-stream" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'

Keys only see the account that created them. Revoke a key at any time and it stops working immediately.

Create an access key

Meta Muse

Use Meta's Muse model for every AI helper in 3ʙɪ Mail: email summaries, key details and deadlines, suggested replies, and drafts from a short prompt.

• Switch any time in Integrations → AI engine. 3ʙɪ AI stays the default.
• Each answer shows which engine wrote it.
• If Muse can't answer, you get a clear message. 3ʙɪ Mail never quietly switches engines.

Choose your AI engine