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MailCue

MailCue

Run as a fully hardened production email server.

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About MailCue

MailCue 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.

Frequently Asked Questions

What is MailCue?

MailCue is MailCue 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.

Is MailCue free?

Yes, MailCue is free to use.

What are the best alternatives to MailCue?

Some popular alternatives to MailCue include Airtop Auth, OpenAI o3-mini, Anything API, Fish Audio S1. Compare their monthly traffic and features above.

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