Email Inbox + Sending API for AI Agents

About Email Inbox + Sending API for AI Agents

An email API for AI agents and platform builders that combines inbound mailboxes, outbound sending, routing, and delivery events in one service. It is designed for teams that want to give each agent its own inbox, process email as clean structured JSON instead of raw HTML, and manage sending across multiple providers without stitching together separate tools.

The product supports dedicated mailboxes on @myagent.mx or a custom domain, plus a unified inbox where teams can view, search, and manage all agent mailboxes together. Incoming mail can be read as raw messages when needed or returned as structured JSON with signatures and quoted history stripped by default. The page also shows options for labels, threads, allowlists, blocklists, batch actions, and keyboard-driven inbox management.

For outbound email, users can connect Gmail, SendGrid, Mailgun, Resend, or any SMTP-compatible provider, or start with the built-in account. Routing supports weighted distribution, automatic failover, and provider health monitoring. Quotas are available at per-second, minute, hour, and day levels, and sending is available through HTTP API or SMTP on port 587.

The platform is also positioned for multi-tenant companies serving customers’ agents. It offers teams, inbox-scoped API keys, tenant-isolated data and routing, and usage-based billing with no per-mailbox or per-seat fees. The page states it is free to start and requires no credit card.

Key features:
- Dedicated agent mailboxes on @myagent.mx or a custom domain
- Structured inbound email JSON with signatures and quoted history stripped by default
- Unified inbox for viewing, searching, replying, labeling, archiving, and composing across mailboxes
- Outbound sending through your own providers or the built-in account
- Weighted routing, automatic failover, and provider health monitoring
- Quotas at per-second, minute, hour, and day levels
- Multi-tenancy with teams, scoped API keys, and tenant isolation
- HTTP API, SMTP, webhooks, Server-Sent Events, SDKs, CLI, and MCP servers