Moving a contact to Favorite folder
To include certain senders to your Favorites list, select it from the sidebar and click on the Heart icon shown below.
To remove a sender from your Favorites list, click on the sender's contact profile you have hearted and undo it.
Moving a Messages to Starred Folder
To move message into starred folder right click on message and select Star from menu. You can find your star message in starred folder . You can also star a message using swipe actions.
To remove a message from Starred folder go to starred folder and click on message and select remove star from menu as shown below.
Rearrange your folders in the order that you like. Select the folder you want to move as shown below.
Drag and drop the folder in the position you want to move it.