MailCue

Realistic email testing server in a single Docker container.

Servicefreeglobal

MailCue is a realistic email testing server in a single Docker container, supporting SMTP, IMAP, DKIM/DMARC and spam filtering with a REST API, SDKs and an MCP server. It's aimed at developers who need to test email-sending code against realistic mail-server behavior without risking real inboxes.

Website

Full match profile

Behind the summary, Matchbox keeps a richer profile of MailCue - 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

Claim MailCue to unlock →

Try Matchbox with your own problem

Describe what is not working - we’ll show you whether MailCue (or something else) actually fits.

Try a problem