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 Windows Linux

    No features added Add a feature

    FakeSMTP icon
  • Origami SMTP

    A SMTP server with JavaFX GUI interface, TLS, HTML messages, and attachment support.

    • Cross-Platform with TLS support. Guest • Oct 2017 Disagree   Agree

    Free Open Source Mac Windows Linux BSD

    Origami SMTP icon

Platforms

Desktop

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