Alternatives to smtp4dev for all platforms with Open Source License

  • Papercut

    Papercut is a simplified SMTP server designed to only receive messages (not to send them on) with a GUI on top of it allowing you to see the messages it receives.

    Free Open Source Windows

    No features added Add a feature

    Papercut icon
  • FakeSMTP

    FakeSMTP is a Free Fake SMTP Server with GUI for testing emails in applications easily. It is written in Java. Configure your application to use "localhost"...

    Free Open Source Mac OS X Windows Linux

    No features added Add a feature

    FakeSMTP icon
  • LunaticSMTP

    LunaticSMTP is a dummy SMTP server with desktop GUI for testing email sending applications.

    Free Open Source Mac OS X Windows Linux BSD JavaFX ... Java

    LunaticSMTP icon
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Platforms

Desktop

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