Link Check can be found in the third section of your Checklist. This will run automatically when you send an email directly into Litmus.
The Link Check will automatically check all of the links in your email to make sure that they are valid. Our check is comprehensive and includes a visual preview of the link, running the link against the Google Safe Browsing database to check for suspected phishing and malware pages, and verifying that click-throughs are being tracked. We’ll even expose Google Analytics UTM parameters if you’re using them on links in your email.