End-to-end SMS testing made simple
From OTPs to MFA, Mailosaur's SMS testing ensures every message is dispatched, delivered, and displayed exactly as you intend.
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Join thousands of companies using Mailosaur
Go beyond basic testing
Confirm every SMS reaches the right user, at the right time and contains the right information.
Test every SMS workflow reliably
Mailosaur ensures every message arrives quickly, contains the right content, and behaves exactly as intended.
Automate your testing
Run SMS OTP testing, verification code flows, and SMS notification tests using Mailosaur’s API with Cypress, Playwright, Selenium, and more.
Dedicated test numbers
Mailosaur gives you dedicated test numbers, so your team perfect communications without the restrictions of using personal phones or location limitations.
Built for your team
From verification codes to notifications, Mailosaur is the most reliable SMS testing tool for development, QA automation, and product teams.
With options to set hierarchal permissions for your projects, it's never been easier to keep everyone on the same page.
Mailosaur allows you to
Continuously improve the quality of your product- by covering everything from MFA flows to notifications and alerts.
Maintain customer confidence- by testing your messages before your customers ever see them.
Scale your testing as you grow- Mailosaur is built to handle high-volume testing, with add ons enabling your testing can scale.
Built with QA and automation in mind - Mailosaur's easy integration and intuitive UI slots seamlessly into your CI/CD pipelines.
What do our customers say
5.0
Mailosaur makes it incredibly easy to capture and inspect emails/SMS messages sent from staging or automated tests. No manual inbox juggling—everything is centralized and API-driven.
4.0
Great solution for our automated test suite to both handle real SMS and email testing programmatically.
4.5
The UI is really smooth and learning curve is minimal for this software. Even a beginner can get hold of the easy to use process and adapt very quickly.
Yes, you can automate that
By integrating Mailosaur's API with your stack, you can start high-volume, comprehensive testing in minutes, without the tedious manual checks.
With quickstart guides and documentation for most frameworks and languages, it's easy to see how Mailosaur can slot into your workflows and start saving you time.
Our products
Email testing
Create end-to-end tests that rely on email. Test account verification emails, password resets, email tracking, and more
SMS testing
Build text messages that work. Create end-to-end tests that cover identity verification, alerting, promotional messages 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.
Frequently asked questions
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