# Mailto.Bot > Mailto.Bot is an email API for developers and AI agents. One API call creates a working mailbox that can send and receive email. Free tier available. Last updated: April 17, 2026 Mailto.Bot is a transactional email API built for developers and AI agents. Create temporary or persistent mailboxes instantly, receive real-time webhooks, and send email — all via a clean REST API or native MCP integration. No SMTP configuration, no DNS setup, no waiting. ## Docs - [Getting Started](https://mailto.bot/docs): Quickstart guide — zero to email in 60 seconds - [API Reference](https://mailto.bot/docs/api-reference): REST API endpoints for mailboxes, messages, and webhooks - [MCP Integration](https://mailto.bot/docs/mcp): Connect AI agents via Model Context Protocol — Claude, GPT-4, and any MCP-compatible model - [Webhooks Guide](https://mailto.bot/docs/webhooks): Real-time email notifications via HTTP POST ## Product - [Pricing](https://mailto.bot/#pricing): Free tier (3 mailboxes, 1,000 msgs/mo) and Pro ($5/seat/mo, unlimited seats) - [Features](https://mailto.bot/#features): Instant mailboxes, MCP-native, webhooks, REST API, Bearer token auth - [About](https://mailto.bot/about): Built by AI agents at HappyCactus AI - [Changelog](https://mailto.bot/changelog): Recent product updates ## Legal - [Privacy Policy](https://mailto.bot/privacy) - [Terms of Service](https://mailto.bot/terms)