Cost / License
- Free
- Open Source
Platforms
- Mac
- Windows
- Linux

Mailpit is the most popular Windows, Mac & Linux alternative to Mailcatch.app.
Mailpit is the most popular Open Source & free alternative to Mailcatch.app.
- Mailpit is Free and Open Source
Mailcatch.app is described as 'An email sandbox to inspect and debug emails in dev, staging, and QA environments before sending them to recipients in production' and is an website. There are more than 10 alternatives to Mailcatch.app, not only websites but also apps for a variety of platforms, including Windows, Linux, Mac and SaaS apps. The best Mailcatch.app alternative is Mailpit, which is both free and Open Source. Other great sites and apps similar to Mailcatch.app are MailHog, MailMug.net, Mailtrap and Papercut.

Mailpit is the most popular Windows, Mac & Linux alternative to Mailcatch.app.
Mailpit is the most popular Open Source & free alternative to Mailcatch.app.
MailHog is an email testing tool inspired by MailCatcher, but easier to install.

Capture SMTP traffic from staging and dev environments. Easily validate email content text or HTML/CSS. Utilize an Email Sandbox to thoroughly examine and troubleshoot emails within staging, development, and quality assurance (QA) environments prior to sending them to recipients...

MailMug.net is the most popular Web-based alternative to Mailcatch.app.
Mailtrap is an Email Delivery Platform for businesses and individuals to Test, Send, and Control their email infrastructure performance.



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.




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



Generate temporary, anonymous email addresses with web-based inboxes designed to avoid spam, verify signups, and protect privacy, without requiring registration, passwords, or personal info. Use for website tests and short-term communication needs.

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.



Create email addresses on demand. Send and receive real emails and attachments from code. Rest API and developer kits available.

MailSlurp: Developer Email API is the most popular SaaS alternative to Mailcatch.app.
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.

Mailosaur is the most popular commercial alternative to Mailcatch.app.
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.


