A full mail stack in a single Docker container. SMTP, IMAP, DKIM, DMARC, spam filtering, REST API, and a modern web UI. Test email exactly as it behaves in production.
One container replaces an entire email infrastructure. No external databases, no message queues, no configuration headaches.
Accepts mail for any address on any domain. Nothing ever leaves the container. Safe by default.
Automatic DKIM signing via OpenDKIM and DMARC verification via OpenDMARC. Test authentication flows end-to-end.
SpamAssassin scores every inbound message. Configurable thresholds with Bayesian filtering and RBL checks.
Complete JSON API for sending, receiving, injecting, and searching emails. Built for CI/CD pipelines.
React-based interface with mailbox sidebar, folder navigation, rich email viewer, and HTML compose editor.
Generate, import, and manage GPG keys. Sign, encrypt, verify, and decrypt emails per RFC 3156.
Full Dovecot server with STARTTLS and implicit TLS. Use Thunderbird, mutt, or any standard client.
Server-Sent Events stream pushes email.received, email.deleted, mailbox.created, and more live.
One docker run. No external databases, no Redis, no message queues. SQLite with optional AES-256 encryption.
Production-grade open-source components, assembled into a cohesive testing platform.
A comprehensive REST API with OpenAPI 3.1 spec and Postman collection included. Authenticate with JWT or API keys.
Send, receive, inject, bulk-inject, search, and manage emails programmatically.
Create, delete, and query mailboxes with folder statistics and email listings.
Generate, import, export, and publish PGP keys. Full RFC 3156 PGP/MIME support.
Manage email domains with DKIM, DNS verification dashboard, TLS certs, and server settings.
One command. No signup. No configuration. A full email server at your fingertips.