You can drag and drop the folders to rearrange them or to move them from one parent folder to another. When the folder is very huge, it may take a few minutes for the folder to get moved completely. In such a case, wait for the transfer to finish completely, before you begin a new activity.
You may want to move a folder from one location to another. You can drag and drop the folders to change the parent folder.

By default, the folders are arranged in the order they are created. You can drag and drop the folders to rearrange them to your preferred order. You can also choose to sort folders alphabetically by changing the settings. Click here to know how to arrange folders alphabetically.

You can drag and drop messages over the folders to move the messages to the respective folders. Select the messages you want to move from the listing pane. Drag and drop it over the folder, where you want to move the messages. You can drop the messages, after you see the green tick mark. 