A local SMTP server with email display, used mostly for development of other apps. Think unlimited Mailtrap that runs on your own computer.
Cost / License
- Free
- Open Source
Platforms
- Self-Hosted


smtp4dev is described as 'The fake SMTP email server for development and testing' and is a Mail Server in the development category. There are more than 10 alternatives to smtp4dev for a variety of platforms, including Web-based, Windows, Linux, SaaS and Mac apps. The best smtp4dev alternative is Mailcatch.app, which is free. Other great apps like smtp4dev are MailMug.net, Papercut, FakeSMTP and Mailtrap.
A local SMTP server with email display, used mostly for development of other apps. Think unlimited Mailtrap that runs on your own computer.


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A fake SMTP server for e-mail integration testing. We capture all the e-mails we receive and make them available via our website and REST API.
Fake SMTP server for safe email testing. Stop accidentally spamming your customers.