MailCue: A Docker-based all-in-one email testing server with full production mail stack
By
Akram H. Sharkar
Hard to chew. Probably not worth the jaw work.
Summary
MailCue is a Docker-packaged email testing server that provides a full production-grade mail stack including Postfix, Dovecot, SpamAssassin, DKIM/DMARC verification, and a React UI. It goes beyond simple catch-all SMTP servers by offering IMAP/POP3 access, API injection, real-time events, and GPG encryption, making it suitable for local development, CI/CD pipelines, and transactional email testing.
Key quotes
· 4 pulledMailCue is an all-in-one email testing server packaged in a single Docker container.
Unlike simple catch-all SMTPs, it provides a fully-featured mail stack with Postfix, Dovecot, SpamAssassin, DKIM/DMARC verification, and a modern React UI.
Test your email workflows exactly as they behave in production with IMAP/POP3 access, API injection, real-time events, and GPG encryption.
Perfect for local development, CI/CD pipelines, and ensuring your transactional emails actually deliver.
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