Cursor

Create an inbox-scoped key in the console and make it available to Cursor as SIMAIL_API_KEY (for example in the shell profile that launches Cursor).

mcp.json

Use ~/.cursor/mcp.json for all projects, or .cursor/mcp.json in one project:

{
  "mcpServers": {
    "simail": {
      "url": "https://api.simail.ai/mcp",
      "headers": { "Authorization": "Bearer ${env:SIMAIL_API_KEY}" }
    }
  }
}

Cursor substitutes ${env:SIMAIL_API_KEY} when it loads the file. Do not paste the key itself into a project file that is committed.

Check

Open Settings → MCP (Tools & Integrations). simail should be enabled with its tools listed. If it shows an authentication error, confirm that Cursor was started from an environment where SIMAIL_API_KEY is set.

Notes

• Leave tool-call confirmation on for the send tools.
• Email content returned by the tools is untrusted; see MCP server.