Email & SMS Testing for Enterprise

Deliver unrivalled quality at scale

Trusted by thousands of teams that are creating amazing software with the help of Mailosaur


Modernising enterprises around the world

Our global service is designed to help enterprises get ahead of the curve when it comes to product development and management. Mailosaur powers agile enterprises around the world, including industry leaders in sectors from healthcare to financial services.

A globe with connections running between locations

Accelerate your delivery

With Mailosaur’s streamlined testing platform, even the largest companies are able to release concepts faster than ever, knowing that every part is production ready and free of snags exactly when you need it to be.

Email deliverability being analysed

With millions of emails and SMS tested every day, you’re in safe hands with the world’s most powerful email testing platform

Protect your brand reputation

With so many things being tested everyday, it’s easy for things to slip through the cracks. With Mailosaur, you are able to prevent development and staging environments from distributing unexpected content before it’s ready, so your customers don’t get unwanted or damaging emails.

An email, with code editor behind. Errors have been detected in the email.

Break down team silos

Invite your whole team onto one platform to allow for shared testing and product demonstrations. With Mailosaur’s shared hub, you are able to develop communications across your whole organization, with a platform built for team collaboration.

Teams accessing an SMS message

Integrate with any CI platform

Seamlessly integrate email and SMS testing into any build pipeline, including support for GitHub Actions, Jenkins, TeamCity and more.

Automate with your favorite framework

Write tests with the tools and frameworks you're already familiar with. With support for all the world's major testing frameworks, including Cypress, Playwright, Robot Framework, and more.

Create tests in any language

Mailosaur's straightforward client libraries provide support for all major languages, including Node.js, Java, Python, .NET, Ruby, PHP and Go.

Email, SMS and security code testing in one place

As more products are secured with multi-factor authentication techniques, it has become harder to test them all in one solution. With Mailosaur, you only need one platform for full end-to-end coverage to streamline your testing process.

The Mailosaur Dashboard displaying an email with errors and warnings detected

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

Ready to get started?

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