As mentioned in a previous article we always get questions from clients asking why their email mailbox is full, despite them downloading the emails to email program.
This tutorial explains how to force Apple Mail to download your emails to computer and remove copies from the server after a certain amount of days to stop it from filling up.
Click on Mail in the top left of your Mac menu bar (next to the Apple icon).
Select ‘Preferences’ from the drop down menu.
Click on the ‘Accounts’ icon from the window that pops up.
On the left hand side click on the Email Account that you wish to apply this setting to.
Click on the ‘Advanced’ tab.
Click the checkbox next to the ‘Remove copy from server after retrieving a message’ option.
In the drop down below you can select the timeframe in which the email will be deleted from the server after it is initially received.