Which of the following are the two different file formats in which Microsoft Outlook saves e-mail messages based on system configuration? Each correct answer represents a complete solution. Choose…

.pst (Personal Storage Table) is an Outlook data file used to store email, contacts, and calendar items locally, commonly used with POP3 accounts or for archiving and exporting data.

.xst is not a recognized or valid Microsoft Outlook data file format and does not exist as an Outlook storage file extension.

.txt is a generic plain text format and is not a native Outlook file format used for saving email messages with full message metadata and structure.

.ost (Offline Storage Table) is an Outlook data file used with Exchange and IMAP accounts to maintain a local synchronized copy of the server mailbox, enabling offline access.