

See our Backup and Restore guide for more information on that. I recommend to store the pst-file in a location that is also included in your backups.Give the pst-file a name and set the location where you want to store your pst-file.You may not be prompted at all if you don’t have multiple store providers installed such as for iCloud. When prompted for the type of data file, select “Outlook data file (.pst)”.In the “New E-mail Delivery Location” dialog, click on: New Outlook Data File….Press the”Change Folder” button at the bottom. Select the POP3 account which you want to redirect to its own folder set.File-> Account Settings-> Account Settings….

If your POP3 accounts are configured to deliver all emails to the same pst-file, you can separate them into multiple pst-files again in the following way. So your Sent Items are also automatically separated when using this technique. When the account has its own folder set, all the emails are automatically stored in the corresponding folders without the need for configuring anything else like for instance rules. This dedicated folder set contains the following default folders

In older versions of Outlook, all emails from all POP3 accounts used to be delivered to a single pst-file which created a Unified Inbox. When you configure multiple POP3 accounts in Outlook, all the emails will be delivered to their own dedicated pst-file.
