If you want
to back up the message folders locally (in addition to keeping them on the
server), you can automatically move or delete older items with AutoArchive or
export the items to a .pst file that you can restore later as needed and use
by importing.
Steps to export messages to a .pst file
- Select File > Open
& Export > Import/Export.
- Select Export to a file,
and then select Next.
- Select Outlook Data
File (.pst), and select Next.
- Select the mail folder you want
to back up and select Next.
- Choose a location and name for
your backup file, and then select Finish.
- If you want to ensure no one has access to your files, enter and confirm a password, and then select OK.
The messages that you keep in a .pst file are no different from other messages. You can forward, reply, or search through the stored messages as you do with other messages.