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MachineMail vs MepMail
Two email tools for AI agents, side by side. Facts come from each tool's own site.
MachineMail
machinemail.devEmail API for AI agents: free inboxes on a shared domain or your own, a trust report on every inbound message, a REST API that follows AgentMail's paths and field names, webhooks and an MCP server.
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MepMail
mepmail.devEmail for apps and AI agents: a Resend-compatible sending API with SMTP, plus mailboxes on your own domain that agents read and draft in over MCP, where you choose direct sending or approval for each reply. AGPL open source and self-hostable.
Visit MepMail| MachineMail | MepMail | |
|---|---|---|
| What it does | Email API for AI agents: free inboxes on a shared domain or your own, a trust report on every inbound message, a REST API that follows AgentMail's paths and field names, webhooks and an MCP server. | Email for apps and AI agents: a Resend-compatible sending API with SMTP, plus mailboxes on your own domain that agents read and draft in over MCP, where you choose direct sending or approval for each reply. AGPL open source and self-hostable. |
| In their words | MachineMail: email API for AI agents | MepMail: email API and mailboxes for apps and agents |
| Open source | No | Yes |
| Website | machinemail.dev | mepmail.dev |
| Link checked | 2026-10-26 | 2026-10-27 |
More options:Alternatives to MachineMailAlternatives to MepMailGuide: Best email APIs for AI agents
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