Step 1:

Welcome screen of Regain Office Backup Software.

Step 2:

Enter the login detail of Office 365 Account.

Step 3:

Select the desired mailbox data items from Office 365 mailbox.

Step 4:

Choose desired format in which you want to take backup.

Step 5:

Select or choose destination location and click Next button.

Step 6:

Mailbox backup process start.