Agent Mailbox by Ridian for Gemini CLI

com.getridian/agent-mailbox

Email inboxes for AI agents at ridianmail.com: read, draft, send, attachments. EU-hosted.

client:Gemini CLI transport:streamable-http

Install Agent Mailbox by Ridian in Gemini CLI

~/.gemini/settings.json · windows: %USERPROFILE%\.gemini\settings.json

{
  "mcpServers": {
    "agent-mailbox": {
      "httpUrl": "https://api.getridian.com/mcp/mailbox"
    }
  }
}

Gemini expands $VAR and ${VAR} inside env values, so a secret can live in your shell rather than this file. Gemini CLI docs