Litmus Chrome Extension

Preview and test HTML emails directly on your desktop or within your email service provider.

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Simplify your email testing process

Integrate the Litmus Extension into your existing workflow to decrease turnaround time and reduce errors.

Trusted by 8,000+ users

FOR DESIGNERS & DEVELOPERS
Run and Review Email Previews directly on your desktop

  • Use Litmus Extension alongside any editor, your localhost, or task runner
  • Preview your local HTML emails in popular email clients and devices
  • Automatically generate Email Previews with a single click

FOR MARKETERS
Preview and test emails directly in your email service provider (ESP)

  • Test your campaign without leaving your ESP
  • Get previews of your email in popular email clients and devices
  • Validate that your links, images, and tracking work properly, and optimize your email’s load time
  • Instantly run a new test with every edit you make
  • Easily test versions of dynamic content in select ESPs

Join the designers and marketers who are using the Litmus Extension to streamline their email production process

Jonathan ChuaDollar Shave Club

“I use the Litmus Extension every day! I love the flexibility it offers for working with local files, whether it’s a hand-built HTML file or one rendered on a localhost. It gives me the shortest possible feedback loop so that I can build, troubleshoot, and hack to my heart’s content. It definitely helps me shave down my dev time.”

Daniel BrownGriffin Technology

“The Litmus Extension is as magical and useful as it sounds. Litmus has long been an essential tool in my development toolbox and now I can’t imagine living without their browser extension.”

Mark RobbinsRebel

“I love the new Litmus Extension. It really speeds up our workflow and we can now test directly from our build environment in real time.”

Stig Morten MyreCampaign Monitor

“The Litmus Extension has practically eliminated all friction for me, allowing me to stay focused on the problem at hand. It works as a seamless interface between my local HTML file and the email client I’m trying to defeat. In practice, this means I try more variations and end up with better solutions.”

Miah Robertstable tr td

“The Litmus Extension makes it extremely fluid when working on and making changes to an email. It’s amazing how it’s filled in the biggest gap with local development and Litmus testing. It has also created this perfect flow of sending an email to testing after finishing a build.”

Say goodbye to navigating between your email building tool and Litmus

Whether you’re using a local editor or prefer your ESP’s email editor to create your emails, with the Litmus Extension you can preview, troubleshoot, and optimize your email right where you build.

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Email marketing made better