most tested email clients

The Top 10 Most Tested Email Clients of 2016

We analyzed over 360 million Litmus email previews tests to find out where email marketers and designers focused their testing efforts in 2016. This ranking was likely determined by how popular these clients are with our customers’ subscribers, as well as common rendering and bugs that make them important candidates to test and test again. You can use this as a starting point for your 2017 campaigns, or to benchmark your testing efforts against what your peers care about.