Cost / License
- Free
- Open Source (MIT)
Platforms
- Mac
- Windows
- Linux

Mailisk is described as 'E2E email testing platform. It allows you to receive emails with code and automate email flows. You get a unique subdomain and access to unlimited custom email addresses' and is a automated testing tool in the development category. There are more than 10 alternatives to Mailisk, not only websites but also apps for a variety of platforms, including Mac, Windows, Linux and SaaS apps. The best Mailisk alternative is Mailpit, which is both free and Open Source. Other great sites and apps similar to Mailisk are MailHog, Mailtrap, MailMug.net and Mailosaur.

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

Mailtrap is an Email Delivery Platform for businesses and individuals to Test, Send, and Control their email infrastructure performance.



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...

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.





A self-hosted SMTP testing gateway designed to replicate production email behavior—including TLS, DNS, authentication, and spam scoring—so your email tests reflect real-world conditions.

Sendpit is a hosted email testing sandbox designed for developers and QA teams. It allows applications to send emails to a safe inbox where messages can be inspected, debugged, and tested without being delivered to real users.

Mailsnag lets you build resilient SMTP integrations while protecting you from spamming customers during testing on QA and Staging environments. It is like Chaos Monkey for SMTP integrations.




DevMail is an email sandbox service for software developers. It allows developers to capture emails from various environments and inspect HTML, text, source code, raw headers, and attachments, and improve deliverability by analyzing email spam scores.
