Mailosaur for...

Engineering

Automate and test email and SMS workflows

Quality Assurance

Empower your team and improve email quality

Product Management

Demo and improve your product using email and SMS

Marketing

Deliver high-quality, targeted email campaigns

Solutions

Email Testing

Create end-to-end tests that depend on email

SMS Testing

Automate and use SMS messages during testing

Email Previews

View your email in Gmail, Outlook and mobile devices

Test automation

See how easy it is to automate all the tests you thought you couldn't

Features

Rules

Create automated rules that simulate every type of scenario including email bounces and out-of-office replies

Custom Domains

Unlimited recognisable email addresses for your brand

Enterprise SSO

Centralized security for your organization

Forwarding Rules

Set up rules that automatically forward your emails to certain inboxes

Links and Codes

Peace of mind that you are sending exactly what you mean to, everytime

Message Analysis

Ensuring the quality of your content is never compromised

Sending, Replying and Forwarding Emails

Seamless email and SMS interactions, every time

Virtual SMTP Servers

Use Mailosaur as a dummy SMTP server to catch every email your product sends

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Blog

Explore the Mailosaur blog for expert insights on email & SMS testing, automation, and quality assurance

Best practices

How to write and test alt text for emails in 2026

Boost email accessibility, rendering consistency, and engagement by implementing better alt text strategies.

Abstract green background with test running dialog and pass and fail results

Best practices

Flaky email tests; the problem, causes and solutions

Don't let flaky tests impact your release times, drive-up maintenance costs, or impact your team morale.

Dark and light mode emails with Mailosaur and Mailtrap logos and running test dialogs

Mailosaur vs Competitors

The ultimate email testing tool: comparing Mailosaur and Mailtrap

Wondering which email testing tool is best for your team? Check out a real side by side comparison and make an informed choice.

Playwright

Automate email verification testing in Playwright (links + OTPs)

Test email verification flows, including magic links and OTPs quickly and easily with Playwright

Mobile and email graphic with mobile, desktop, MacOS and dark mode dialog boxes on a gradient background

Mailosaur vs Competitors

Email preview software: the best Litmus alternatives

Let's talk email previews software; which is the best fit for your team?

Best practices

How to create a good email testing plan

If you’re sending emails out to a lot of people, it’s critical to have a good email testing plan in place.

MFA and 2FA

Tutorial: How to Automate Testing of Two-Factor Authentication with JMeter and Mailosaur

This will show you how to test two-factor authentication using SMS, or an authenticator app, with Mailosaur and the cross-platform JMeter automated testing tool.

Software development

Nightwatch.js - Get started with automation

It sometimes feels like the robots are coming to the QA world, with automation and automated testing being such a hot topic at the moment.

Best practices

Maximising test automation ROI - Measuring success in software development

Explore the significance, key metrics, methodologies, and best practices for maximizing Return on Investment (ROI).

Best practices

How you know when you need to automate your QA tests

It’s a question that has beguiled an endless list of QA teams: should I automate this test?

Best practices

What is QA automation? Streamlining software testing

In this article, we will take a deeper look into the world of QA automation, exploring its benefits, as well as the challenges it faces.

Software development

Exploring the various types of software testing

Software testing types and their vital roles in development. Gain insights for robust practices and ensure high-quality software delivery.

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