Email Testing Say goodbye to broken emails and long review cycles

With Litmus email testing and 24/7 email monitoring, you can send error-free emails that are optimized for every subscriber– without spending hours on testing and QA.

Email Testing in Litmus

On-brand, error-free emails for every subscriber–every time

With email clients making changes as often as every 1.2 days, and 300,000+ different ways for your email to display, it’s all too easy to send out broken emails—without even knowing it. Litmus eliminates those blindspots so you can confidently send effective, error-free emails – and cut your email testing time in half.

Preview and test on 100+ popular email clients

Unlimited, 24/7 email monitoring with Litmus Email Guardian

Catch and fix errors with our comprehensive QA checklist

Get visibility on deliverability with spam tests

“We’ve cut our email QA time by over 50%, giving us time to focus our efforts on segmentation and other strategic campaign development opportunities.”

ADAM MACDONALD, Director of Campaign Management, DEG, Linked by Isobar

Hitting “send” doesn’t have to be stressful

Litmus’ email testing software helps you find and fix critical elements that affect performance and delivery. Send every email with peace of mind, knowing errors won’t jeopardize your email marketing goals or put your brand reputation at risk.

Find and fix costly email errors before you send by testing across 100+ email clients in seconds.

Instantly preview your campaigns in 100+ popular email clients

You don’t have to waste your time sending test emails manually to different email clients. With Litmus, you have the power to test and preview 100+ popular email clients—including Dark Mode—from a single spot, in real time.

Hit send feeling confident that every subscriber is seeing exactly what you want them to see.

Check out all email clients available for testing

Automatically test your email rendering, accessibility, first impressions, and more to create the best subscriber experience.

Unlimited, 24/7 email monitoring

Never send another broken email with Litmus Email Guardian, the only solution that watches over your emails when you can’t be there. Get an automatically alert when an email client makes a change that puts your subscriber experience and brand reputation at risk, so you can take action fast.

Learn more about Email Guardian

Automatically test your email rendering, accessibility, first impressions, and more to create the best subscriber experience.

Send confidently with an automated, comprehensive QA test

Make the dreaded “oops email” a thing of the past. Run a Litmus Test on every email campaign to check your links, images, tracking, and other critical elements before you send – and get guidance on how to fix any issues.

Plus, with email accessibility checks for color vision deficiency and more, you can ensure every email is inclusive and accessible.

Automated pre-send spam testing to catch deliverability issues before you send

Reach the inbox—not the spam folder

Did you know that 16% of emails never make it to the inbox? You’ve worked too hard on your email marketing campaign for it to land in the spam folder.

With Litmus Spam Testing, you can scan your email across 25+ spam filters and quickly identify issues that could keep your email from reaching the inbox. And get contextual advice to help you fix those issues before you send.

Check out Litmus Spam Testing

With Litmus Technology Integrations you can say goodbye to manual, time-consuming tasks so you can get more from your marketing in less time

Accelerate your email testing process with integrations

Litmus works seamlessly with your tech stack to streamline your email testing process. Our robust integrations give you back hours of time, freeing you up to focus on other big opportunities and ideas.

  • Test email campaigns wherever you build to fix issues early in your email design workflow and reduce review cycles
  • Review campaigns alongside your email service provider (ESP) or code editor with the Litmus Chrome Extension
  • Use ESP Sync to easily import emails to Litmus for review and testing

See how Litmus integrates with your favorite tools

See how Litmus helps you test emails quickly and send with confidence

Try Litmus and send on-brand, error-free emails every time–in less time than you thought possible.

Try for free

What other Email Experts are saying about Litmus Email Testing

700,000+ Users Across Companies Of All Industries And Sizes Trust Litmus

    • Ford
    • LendingTree
    • publicis Worldwide
    • Johnson and Johnson
    • Target
    • Cisco
    • Sony

Join 700,000+ marketers who use Litmus to make every send count.

Try it free

Email Testing FAQs

Email clients and devices change constantly. In fact, one study we conducted found that the top five most popular email clients made a change every 1.2 days on average. Even if your email templates aren’t changing drastically from send to send, any of the changes an email client or device makes can break your email, so testing before every send is the only way to truly send with confidence.

Every email client and device renders or displays emails differently. While a generic browser preview is great while you build, you should test your email across all email clients and different devices popular with your audience before you send to ensure more nuanced email clients, like Gmail or Outlook, are showing what you expect your subscribers to see.

Testing early and often is a best practice when it comes to streamlining your email workflow and getting the best results. If you test as you build, you can quickly catch and fix errors before your email is routed to stakeholders within or outside of your company for review and final approval, reducing review cycles and getting your email out the door faster.

Litmus Spam Testing specifically looks for issues that commonly lead to long term deliverability headaches. By finding and resolving these issues before you send, Litmus empowers you to take a proactive approach to your email program health and stay out of the spam folder, increasing open rates, click-through rates, and delivering better results.

In addition to popular third party code editors like Dreamweaver, Visual Studio, and Sublime Text (to name just a few), Litmus Extension helps you test emails as you build in Salesforce Marketing Cloud, Oracle Eloqua, Acoustic Campaign Content Builder, Mailchimp, Adobe Marketo, Oracle Responsys, Pardot, Adobe Campaign Standard, and Klaviyo.