GreenMail

Virtual SMTP, IMAP, and POP3 mail server for testing email-based applications without a live mail server.

PlatformWebfree

GreenMail is an open-source virtual mail server that emulates SMTP, IMAP, and POP3 for testing email-based applications without a live mail server. It lets developers send, receive, and verify emails inside a unit test or a standalone Docker container. Built for developers who need a fast, isolated way to test email functionality.

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Full match profile

Behind the summary, Matchbox keeps a richer profile of GreenMail - the signals our matcher actually reads to decide when to surface it. It stays private; claim the listing to see and control it.

Problem & pain-point mapping
Who we surface it to (audience fit)
What it's a strong alternative to
Trust & credibility signals

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