Outlook stores your email, contacts and calendar in data files on your computer. There are two types: PST and OST.
| File | Which account? | Feature |
|---|---|---|
| .pst | POP3 accounts, archives | May hold the only copy of your email; must be backed up. |
| .ost | IMAP and Exchange accounts | An offline copy of the server; rebuilt from the server even if deleted. |
Where are the files?
- PST
C:\Users\UserName\Documents\Outlook Files- OST
C:\Users\UserName\AppData\Local\Microsoft\Outlook
In Outlook, File > Account Settings > Account Settings > Data Files shows the files you use and where they are.
Note: If you use POP3, the only copy of your email may be in the PST file. Back it up regularly so it isn't lost if the computer fails.
Need help? Open a support ticket from your client area or call +90 216 348 35 03.
