Using the Archive button to move messages to the Archive folder, it helps you to reduce the size of your mailbox and free some space. Below are the steps.
Click on the “File” Menu on the top left.
Under “Archive items older than” enter a date. Check the Include items with “Do not Auto Archive” check box to archive individual items that are excluded from automatic archiving.
For “Archive file”, select the location in which you wish to save the file.