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By default, a new Outlook Data File (.pst) is created in Outlook 2010 when you add a new POP3 account
Article ID: 983131 - View products that this article applies to.
Microsoft Office Outlook 2010 introduces changes to accounts that help you keep email messages better organized when those email messages come from multiple accounts. By default, Outlook 2010 automatically adds a new Outlook Data File (.pst) when you add a new POP3 account. However, earlier versions of Outlook let you select an existing Personal Folders file as the default delivery location. This could result in email messages from different accounts being delivered to the same Inbox.
This new functionality lets you easily determine through which account an email message was delivered. The new functionality also lets you select through which account an outgoing email message is sent. And this includes email messages that are replies or that are forwarded.
Although this new functionality is the default when you create a new account, you can manually configure a new Internet Email account that uses an existing Outlook Data File (.pst).
How to manually configure accounts to use an existing Outlook Data FileTo create a new account and have that account use an existing Outlook Data File (.pst), follow these steps:
How to change the default delivery locationIf the account is already configured to use the default settings, the default delivery location can be changed. To do this, access Account Settings, and then use the Change Folder option for the POP account.
To change the Outlook Data File (.pst) that an existing account uses, follow these steps: