1) You can find your favorite contacts in the sidebar under the Favorites section.
2) To add someone to your Favorites list, select their email from the sidebar and click the Heart icon.
3) The selected email will move to your Favorites list as shown below:
4) To remove someone from your Favorites list, click on the contact under your Favorites section, open one of their emails to see their contact profile on the right side, and then click the Heart icon again to undo it.
Star a Message:
Unstar a Message:
That’s it! You’re all set to organize your folders and customize your Toolbar.