Every AI agent that deals with people eventually needs an email address, and Open Agent Email gives each one a real inbox on your own domain. Agents receive mail in proper threads, reply in place, send new messages, schedule sends up to 90 days ahead, and handle attachments, labels, search, trash and restore from one mailbox. A human approval gate can hold any outgoing message until a person clicks approve or reject, with an expiry and a full history, so a risky reply never reaches a customer unchecked. Incoming mail is screened for prompt-injection tricks and hidden text, checked against SPF, DKIM, and DMARC, and can be scanned for viruses before an agent reads it. Agents connect through a REST API with an OpenAPI file, dependency-free Python and TypeScript SDKs, the oae command line, signed webhooks, a live WebSocket stream, or 96 MCP tools for coding agents. The browser dashboard covers guided setup, inboxes, pending approvals, the outbox queue with retries, delivery metrics with bounce and complaint tracking, contacts, templates, domains with DNS verification, and API keys. Sending runs through your own relay, SES events feed suppression lists automatically, and scoped per-inbox keys limit what each agent may do. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. Apache-2.0 licensed.