Email Testing Software End-to-end email testing for a seamless email experience
Mailosaur is the leading customer communication testing platform, specialising in email and SMS testing for any app, product or campaign.
Ensure that your emails are faultless before they leave the server with Mailosaur!

Mailosaur's Email Testing API
Prove that signup and customer onboarding works
Ensure users can reset their passwords easily
Know when emails arrive in customer’s inboxes
Be sure that email notifications are sent at the right time, with the right content
Check that your product scales and keeps sending when under load

Simulate unlimited user interactions
With Mailosaur you get an unlimited number of email addresses to use in your tests, letting you simulate real user communication.
Be confident that your whole product works
Many of the most important journeys in your product require an email. Increase test coverage to know that you’re delivering a quality experience.
Automate email tests with any framework
Extend your QAA coverage no matter if you use Cypress, Playwright, Robot Framework, or anything else.

Test anything you send by email
Continuously improve the quality of your product
Errors
- Find and fix errors, and optimize every email your product sends
Signup
- Test login, signup, and password reset functionality to be sure that your product is accessible and available at all times.
Notifications
- Ensure that email notifications and reminders arrive accurately in your customers’ inbox, regardless of email client
Broken Links
- Catch broken links and continuously improve recurring outbound emails.
Open Tracking
- Confirm that open tracking functionality really works on your marketing emails.
Automated Responses
- Prove that customers receive the correct automated response when they interact with your support team.
Why businesses choose Mailosaur
Mailosaur is the only all-in-one testing platform you will ever need. Use our API to ensure your product is absolutely seamless for your customers. Our software supports vital tests to help QAs, marketers, engineers and product managers meet individual goals and objectives, as a team.
Our Products
Everything you need to test customer communication
Email Testing
Create end-to-end tests that rely on email. Test account verification emails, password resets, email tracking, and more
Email Previews
Instantly see how your email will look to any recipient, no matter what email client they use, so there are no nasty surprises.
SMS Testing
Build text messages that work. Create end-to-end tests that cover identity verification, alerting, promotional messages and more