MultiMail

MultiMail is an email service specifically designed for AI agents, giving each agent a real email address and the ability to send and receive email via clean markdown format (rather than heavy HTML), reducing token usage for LLMs. It features automated threading, advanced oversight controls (including human-in-the-loop gating and full autonomy), reputation and identity signing, and seamless attachment handling. MultiMail supports both REST API and Model Context Protocol (MCP) integrations, making it ideal for autonomous agents, agent frameworks, and supervised LLM workflows that need reliable, programmatic email interaction.