The Outlook profile (mail store, file with the extension *.pst or *.ost) is limited in size. This limit is 50 GB for modern versions of Outlook and 20 GB for older versions (Outlook 2007). When the limit is reached, Outlook stops receiving mail and warns you to clean the profile immediately. However, even before the profile size limit is reached, a large number of messages can accumulate in the profile for a long period of time, which negatively affects the performance of Outlook and makes it difficult to work with email.
To avoid the above problems and to avoid manually deleting or archiving emails, it is a good idea to configure auto-archiving. In this case, Outlook will periodically clean the storage of old emails.
To configure auto-archiving in Outlook, select the File menu.
In the opened menu, select " Options".
In the opened window, select "Additional" from the menu on the left.
In the "Archiving" section on the right side of the window click "Auto Archiving settings".
In the window that opens, tick the 'Auto Archive every' box to enable auto-archiving. Select the frequency with which the Auto Archive task should start. If necessary, select the "Prompt before archiving" checkbox.
Check the auto-archiving behaviour settings: delete or move the old items to the archive, the period after which the deletion or move will take place. You can also select the "Show archive folder in folder list" option and specify the desired path and name for the archive file.
When the settings are complete, click OK.
