F you are using Outlook to download your email to your desktop PC, Outlook is likely “deleting” mail from your email server when it downloads it to your PC.

There is a setting in Outlook to “Leave Messages on Server”.

For MS Outlook 2003:

Outlook > Tools > Email accounts > View or Change existing > next.

Highlight the email account > Change > More Settings.

Advanced Tab > Leave a Copy Messages on Server

Check that box.

• You will need to perform this edit for each Outlook email account you have.

Other versions of Outlook have a similar setting although it might located in a slightly different location in the :advanced settings”