Some of the important file extensions of Outlook and Outlook Express are mentioned as below :
Microsoft Outlook :- Outlook Data File (.pst)
- Offline Folder File (.ost)
- Personal Address Book (.pab)
- Offline Address Books (.oab)
- Messages (.msg, htm, .rtf)
- Stationary (.htm)
- Rules (.rwz)
Outlook Express :- Outlook Express data file (.dbx)
- Email Files (.eml)
- Email messages as text files (.txt)
- Address book (.wab)
- Contact information (.vcard)
- Internet Account files (.iaf)
Regards
Jane