Outlook Express mailbox data can be stored in which extensions?

Outlook Express mailbox data can be stored in which extensions?

• A. Mbx or Dbx extensions
• B. Pst or Ost extensions
• C. Eml or Msg extensions
• D. Txt extensions

Answer: (A)

Outlook Express stores its mailbox data as container files for each folder. The standard extension for these mailbox files is DBX (for example, Inbox.dbx, Sent Items.dbx). Some references in older or alternative contexts also show MBX as a mailbox file extension. The other options don’t fit because PST and OST are used by Microsoft Outlook, while EML and MSG are formats for individual messages, not whole mailboxes, and TXT is just plain text. So the mailbox data for Outlook Express is associated with MBX or DBX extensions.

Outlook Express stores its mailbox data as container files for each folder. The standard extension for these mailbox files is DBX (for example, Inbox.dbx, Sent Items.dbx). Some references in older or alternative contexts also show MBX as a mailbox file extension. The other options don’t fit because PST and OST are used by Microsoft Outlook, while EML and MSG are formats for individual messages, not whole mailboxes, and TXT is just plain text. So the mailbox data for Outlook Express is associated with MBX or DBX extensions.