How to Backup emails (Inbox, Sent item, Contacts, etc.)
Open the program, go to File in the menu, click ‘Open’ > choose ‘Import and Export’.
On the next page of the Import and Export Wizard window appears ‘Export to a file’
|Export to a file|
|Outlook Data File (.pst)|
|Select a head of the folders, click 'Next'|
|Options: Replace duplicates with items exported|
|Exporting to .pst file|