If your users leave the purchase incomplete and switch to a different tab, the tab editor action will be a very effective way for you to remind them. Changing the text and favicon of your tab for users who have switched to another tab, and even showing the number of products left in their cart, can be very effective. This way, you can trigger the user to return to your tab and continue shopping where they left off.

1- You can increase your returning visitor rate. 

2- You can extend the time spent on the site and reduce your bounce rate.

 3- You can increase the conversion rate. Activate the tab editor action and leave the rest to Collectaction.