We've made the existing exit intent trigger for web message more powerful by adding new signals as well as enabling it for mobile websites. Here is a summary of all the signals available!

• NEW! (Website & Mobile Website) Signal - Scroll based logic - If a user scrolls down on a website and comes back up to the header, then this will get triggered.
• NEW! (Website & Mobile Website) Signal - Tab Switch - If a user switches to a new tab, the web message will pop up on the old tab
• (Website) Signal - Mouse cursor movement toward close button or tab switch - If a user moves to browser header (to close or switch tabs), web message will popup on the old tab

(You can find the exit intent trigger under "Whom to Target - Audience section" when building up your web message)

Access documentation from here!