It's the best thing since Litmus

Go beyond static screenshots and interact with real email clients to make changes and see updates in real-time.

Test, troubleshoot & preview in real-time

Get your own direct connection to a virtual machine. Preview animation, hover effects, video, forwards and replies.

Eliminate "Guessing and Checking"

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

Included with your subscription*

No one else offers this kind of testing, and it’s included in most plans for no extra charge. Just log in to your Litmus account and look for the Interactive Testing bar at the bottom of your screenshots. It’s available for Outlook, Gmail, Lotus Notes, Thunderbird, AOL Mail, and Yahoo! Mail. * Excludes freelancer plan

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

With over 400 attendees and 20 sessions covering everything from mobile email to content strategy to design testing, The Email Design Conference 2014 was unforgettable. Weren’t able to attend? The session videos from this year’s sold out conference have you covered—get the videos today!

Learn more →