Instantly see the impact of edits

Get instant previews in 40+ programs and apps as you build and make changes to your email.

Responsive views

Preview your email in mobile and desktop environments simultaneously to create a subscriber-friendly experience.

Troubleshoot in real time

Apply and view HTML changes immediately in trouble-prone clients like Outlook, Lotus Notes, and Gmail.

Streamline your build process

Spend less time fixing problems and more time creating new possibilities with email.

trusted by

...along with 100,000 other email marketers,
designers and agencies worldwide.

"Litmus have created an amazing product. It should be part of every marketer’s toolkit."

Dave Greiner Campaign Monitor

"Litmus continues to be an invaluable resource, meeting our expedient & accurate demands within email development."

William Buffo Groupon