Use Playwright to test user interaction
From email notifications to SMS alerts, promotional offers to authentication
Mailosaur lets you build end-to-end tests for common customer actions that would usually require manual testing, like resetting a password.
Trusted by leading brands worldwide
Increase test coverage by testing these common scenarios
Reduce manual testing, speed up releases and avoid test regression
Complete the end-to-end testing of password reset workflows, account verification, rescheduling a delivery, or unsubscribing. Use Playwright to validate that emails and SMS messages contain the right content, target the right audience, and include valid links that work every time. Plus ensure links expire after a certain period of time.
Mailosaur works by capturing every message you send
Unlimited test email addresses
Every inbox in your account gives you instant access to an infinite number of email addresses to test with. With no setup required, you can use a unique address for every test case, scenario or team.
International phone numbers
Instead of using personal devices, which rely on staff availability and geography. Access phone numbers from around the world and grant team member access so that you can test together.
An API loved by testers
Built for QA automation, Mailosaur’s API allows testers to integrate email, SMS and 2FA testing directly into their existing tech stack. Our customers love our easy-to-use documentation and the speed in which they got started.
Assertions in your library
It does not matter what programming language or test framework you use. With official API clients for all major programming languages, you can build test cases and write assertions in the way you’re used to.
// Step 1: Send an email into Mailosaur
// Step 2: Fetch your message via Mailosaur
const MailosaurClient = require('mailosaur');
const mailosaur = new MailosaurClient('YOUR_API_KEY');
const criteria = {
sentTo: 'anything@YOUR_SERVER_ID.mailosaur.net',
};
const email = await mailosaur.messages
.get(serverId, criteria);
// Step 3: Complete the process
expect(email.subject).toBe('My password reset');// Step 1: Send an email into Mailosaur
// Step 2: Fetch your message via Mailosaur
const MailosaurClient = require('mailosaur');
const mailosaur = new MailosaurClient('YOUR_API_KEY');
const criteria = {
sentTo: 'anything@YOUR_SERVER_ID.mailosaur.net',
};
const email = await mailosaur.messages
.get(serverId, criteria);
// Step 3: Complete the process
expect(email.subject).toBe('My password reset');Automate tests in minutes
With just a few lines of code added to your project
Whether you use Python, .NET, Java, or Javascript, Mailosaur is quick to integrate within Playwright, requiring just a few lines of code and a few minutes of your time. Enjoy seamless, reliable test automation with Mailosaur, enabling rapid validation of user interactions and ensuring consistent, high-quality results across all your test environments.
Customer stories
Mailosaur's user-friendly API seamlessly integrates into existing workflows, delivering reliable automation that accelerates development cycles and enhances product quality.
Need help getting started?
Explore our comprehensive documentation, step-by-step guides, and code examples tailored for Playwright users.
How to test emails in Playwright
Follow our detailed guide to integrate email testing directly into your Playwright test scripts.
How to test SMS messages in Playwright
Step-by-step guide to see how easily you can test SMS workflows directly within your Playwright test scripts.
How to test login functionality
Learn how to test login functionality with Playwright using OTP codes.
Playwright quickstart guide
Step by step guide to set up testing environments, integrate Mailosaur with Playwright scripts to start testing.
QA automation tailored to your industry
Mailosaur is loved across all industries, helping test the world’s most popular products and services.
Financial
Automate the end-to-end testing of fintech helpdesk responses and payment reminders for overdue payments to timely replies to enquiries.
Healthcare
Validate patient alerts, like appointment bookings to reminders. Test real scenarios, such as invalid contact details, to test alerts work.
Media
Test and automate to identify issues early. Test event invites & promos include correct details, RSVP links, codes, and subscription info.
Retail
Automate testing for retail orders, promo codes, and shipping updates to detect issues early and ensure a seamless customer experience.
Travel
Test real-world scenarios like flight updates, delays, gate changes, booking confirmations, check-in reminders, and itinerary updates.
Automotive
Test updates for vehicles or parts. Like tracking numbers, delivery times, and shipping notifications.
Works with any flavor of Playwright
It doesn’t matter which Playwright library you’re using, we support them all. From Java to Python, .NET to Javascript
Automate anything your users might do
Automate end-to-end scenarios, validate emails, and integrate with our API for seamless workflows.
Start your 14 day free trial today.