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Open Source Mailtrap Alternatives

The best open source alternative to Mailtrap is MailHog. If that doesn't suit you, our users have ranked more than 10 alternatives to Mailtrap and nine of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Mailtrap are Papercut, FakeSMTP, MailCatcher and Origami SMTP.

Mailtrap alternatives are mainly Disposable Email Services but may also be Mail Servers. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Mailtrap.
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Mailtrap iconMailtrap
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Mailtrap is a fake SMTP server for development teams to test, view and share emails sent from the development and staging...

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  1. MailHog icon

    MailHog

    • FreeOpen Source
    • Mac
    • Windows
    • Linux
    • Docker
    25 alternatives to MailHog 

    MailHog is an email testing tool inspired by MailCatcher, but easier to install.

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    Features
    1.  PortableMailHog can be used from a USB stick or similar with no prior installation.
    Screenshot
  2. Papercut icon

    Papercut

    • FreeOpen Source
    • Windows
    15 alternatives to 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.

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    Features
    Instant Feedback When New Email Arrives


  3. FakeSMTP icon

    FakeSMTP

    • FreeOpen Source
    • Mac
    • Windows
    • Linux
    19 alternatives to FakeSMTP 

    FakeSMTP is a Free Fake SMTP Server with GUI for testing emails in applications easily. It is written in Java.

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    Features
    Mac OS X
  4. MailCatcher icon

    MailCatcher

    • FreeOpen Source
    • Mac
    • Windows
    • Linux
    18 alternatives to MailCatcher 

    MailCatcher runs a super simple SMTP server which catches any message sent to it to display in a web interface. Run mailcatcher, set your favourite app to deliver to smtp://127.0.0.1:1025 instead of your default SMTP server, then check out http://127.0.0.

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    Features
    Screenshot
  5. Origami SMTP icon

    Origami SMTP

    • Mac
    • Windows
    • Linux
    • BSD
    18 alternatives to Origami SMTP 

    Origami SMTP was created with the idea to have a fake email server for testing purposes that supported TLS. This is because the code the developer was working on at the time had several hard coded values enforcing TLS so most other solutions would not work.

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    Features
    Screenshot


  6. Sendria icon

    Sendria

    • Mac
    • Linux
    • Self-Hosted
    • Docker
    6 alternatives to Sendria 

    Sendria (formerly MailTrap) is a SMTP server designed to run in your dev/test environment, that is designed to catch any email you or your application is sending, and display it in a web interface instead of sending to real world.

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    Features
    Screenshot
  7. MailDev icon

    MailDev

    • FreeOpen Source
    • Mac
    • Windows
    • Linux
    • BSD
    • Self-Hosted
    • Docker
    15 alternatives to MailDev 

    MailDev is a simple way to test your project's generated emails during development with an easy to use web interface that runs on your machine built on top of Node.js.

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    This app doesn't have any features at the moment.
    Screenshot
  8. LunaticSMTP icon

    LunaticSMTP

    • FreeOpen Source
    • Mac
    • Windows
    • Linux
    • BSD
    • JavaFX
    • Java
    17 alternatives to LunaticSMTP 

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

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    Features
    1.  PortableLunaticSMTP can be used from a USB stick or similar with no prior installation.
    Screenshot
    Screenshot
  9. Mailocal icon

    Mailocal

    • FreeOpen Source
    • Self-Hosted
    19 alternatives to Mailocal 

    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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    Features
    Screenshot
Showing 9 of 9 alternatives
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