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    Mailosaur Alternatives

    Mailosaur is described as 'Email Testing for QA & Development Teams. Catch every email your product sends, analyze it's contents, follow links and test deliverability all via the Mailosaur API' and is an website in the development category. There are more than 10 alternatives to Mailosaur, not only websites but also apps for a variety of platforms, including Windows, Linux, Mac and SaaS. The best alternative is MailHog, which is both free and Open Source. Other great sites and apps similar to Mailosaur are Papercut, smtp4dev, Ethereal Email and FakeSMTP.

    This page was last updated May 20, 2022
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    Email Testing for QA & Development Teams. Catch every email your product sends, analyze it's contents, follow links...
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      • FreeOpen Source
      • Mac
      • Windows
      • Linux
      • Docker
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      MailHog is an email testing tool inspired by MailCatcher, but easier to install.
      • FreeOpen Source
      • Windows
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      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.


      • FreeProprietary
      • Windows
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      Dummy SMTP server that sits in the system tray and does not deliver the received messages. The received messages can be quickly viewed, saved and the source/structure inspected. Useful for testing/debugging software that generates email.
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    1. Ethereal is a fake SMTP service, mostly aimed at Nodemailer users (but not limited to). It's a completely free anti-transactional email service where messages never get delivered.
      • FreeOpen Source
      • Mac
      • Windows
      • Linux
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      FakeSMTP is a Free Fake SMTP Server with GUI for testing emails in applications easily. It is written in Java.


    2. Mailtrap is a fake SMTP server for development teams to test, view and share emails sent from the development and staging environments without spamming real customers.
    3. 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.
    4. QA tool for automating end-to-end email tests. Get unlimited private email addresses and inboxes for testing new user signups, transactional emails and drip campaigns, deliverability and spam scores, etc. Integrates with your CI/CD workflow. Includes spam testing.
      • FreeOpen Source
      • Mac
      • Linux
      • Self-Hosted
      • Docker
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      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.
      • FreeOpen Source
      • Mac
      • Windows
      • Linux
      • BSD
      • Self-Hosted
      • Docker
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      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.
    Showing 10 of 19 alternatives