Postryn

Postryn targets developers and teams building AI agent workflows that need reliable email without surrendering full inbox control. Users create one or more dedicated addresses, view every received message in a private workspace, and connect agents via OAuth or scoped access keys (including MCP integration for clients such as ChatGPT and Claude). Permissions are limited to chosen addresses, specific scopes, and short lifetimes; nothing sends mail on the user’s behalf, and rules can label, archive, or quarantine messages.

Features include multi-address workspaces, private storage with configurable retention, human-approved agent connections, and Nigerian naira billing. Common use cases are isolating signups, receipts, or research flows, giving agents temporary read access to specific aliases, and maintaining clear audit boundaries. Free and paid plans set limits on addresses, received volume, storage, and agent requests.