Freemium
Added on Nov 04,2026
OpenMail is an email inbox and email API built for AI agents, giving each agent its own address so it can sign up for services, talk to people and institutions, and read email.
Every agent gets its own inbox rather than a shared inbox or a forwarding rule, and replies reach your agent over a webhook or WebSocket so nothing needs to poll.
Attachments such as PDF, CSV, PNG, XLSX, DOCX and JSON files arrive as plain text ready for a prompt, so the agent never deals with MIME types.
Sender rules let you allow or block mail by address or domain, per account or per inbox, to keep noise away from your handler.
Three usage modes are available: Tool mode sends and reads email only when asked, Notify mode alerts you to new mail, and Channel mode answers incoming mail on its own with no human in the loop.
It integrates with OpenClaw, Hermes Agent and Claude Code through plugins, offers an MCP server, a CLI, a REST API, TypeScript and Python support, LangChain and the AI SDK, and is listed in the ChatGPT plugin directory.
Pricing: the free plan includes 3 inboxes, 3,000 emails a month and 3 GB of storage with no credit card. Pro costs 9 euros a month plus usage and includes 10 inboxes, then 1 euro per extra inbox, 10,000 emails a month, 10 GB of storage, custom domains and spend management. A startup programme offers 500 euros in credit.
It is suited to developers and teams building AI agents for customer support, sales outreach, verification codes and other email-based workflows.
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