OpenAgent.email vs AgentMail
Last checked July 28, 2026 · Something outdated? Open an issue
AgentMail is a hosted email API for AI agents. openagent.email is the same idea as open-source software you run yourself: unlimited inboxes on your own domain, and your mail never leaves a machine you own.
Side by side
| openagent.email | AgentMail | |
|---|---|---|
| What it is | Open-source software (Apache-2.0) you self-host | Hosted SaaS |
| Where your mail lives | On your own server | On their infrastructure |
| Cost model | Free software + your own VPS (~$5/mo covers everything) | Subscription that scales with usage; limited free tier |
| Inboxes | Unlimited, on your own domain | Limited by plan |
| Interfaces | REST API, MCP server, built-in human dashboard | REST API, websockets, webhooks |
| OTP & verification-link extraction | Built in — codes and links parsed out of incoming mail automatically | — |
| Lock-in | None. Standard SMTP/IMAP underneath; all data is yours | Your mail data lives in their platform |
Choose AgentMail if
- You never want to run or maintain a server, period.
- You'd rather pay usage fees than own infrastructure.
- You want a vendor to own uptime and deliverability for you.
Choose openagent.email if
- You want unlimited agent inboxes at a fixed, near-zero cost.
- Your agents' mail should never leave your own machine — privacy, compliance, or just principle.
- You want every agent on your own domain, with a dashboard for humans included.
- You like your tools open, auditable, and forkable.