Identify Problems and Troubleshoot Your Email with Code Analysis
We can’t say it enough: creating HTML emails is tricky. Even with loads of resources to help fix common issues, the bugs that cause rendering problems can be tough to crack.
Introducing Litmus Code Analysis
Code Analysis provides a compatibility report addressing client-specific CSS bugs in your email’s HTML. The report—based on Campaign Monitor’s legendary CSS support matrix and a few home-grown bonus rules—identifies incompatible CSS in your HTML and provides warnings along with their corresponding line numbers from your code.

As you click on each warning in the report, your HTML will automatically scroll to the location of the warning in your code.

Identify, fix and preview issues quickly and painlessly
Code Analysis is great for identifying problem areas so you can fix issues quickly and focus on more important things. Better yet, using Code Analysis in conjunction with Interactive Testing makes troubleshooting a breeze.
Get started using Code Analysis
Code Analysis is available immediately and included with all Litmus subscriptions. To run an analysis on your email, simply run an email test as you normally would (either by sending us a test email or pasting in HTML).

Code Analysis is automatically included on every new email test created in your account.
Don’t have an account? Sign up for a free 7-day trial!
More troubleshooting resources
- Infographic: 16 tips & solutions to common problems
- Coding 101 Infographic: The foundations of HTML email
- How-to article: The best way to code background colors
- How-to article: Ban blue links on iOS devices