They get a message from Facebook, decide to check their email, or ultimately end up leaving your website.
If you have the Re-Engager software installed on your website, it forces them back by showing a " notification of message " in the browser tab.
When the visitor returns to your website to investigate the notification, a pop-up with a custom video you ' ve created RE-ENGAGES your visitor and gets them plugged back in and interested in what you have to offer.