Screen 1:

Click Add to select the IMAP account for Backup.

select the IMAP account for Backup
Screen 2:

Enter the Server name or the IP address, user email address, and password. Click Add.

Enter credentials
Screen 3:

Click the 'Set Filter and Migrate' option.

Click the 'Set Filter and Migrate' option
Screen 4:

Apply the filters on the IMAP account to save only the necessary items in the backup.

Adding desired filters for the selective mailbox items
Screen 5:

Choose any one format as the backup format. Click OK.

Choose any one format as the backup
Screen 6:

Select the destination folder. Click Ok.

Providing destination path to save the backed up
Screen 7:

The process is completed quickly. Click Ok.

IMAP mailbox is successfully backed up to PST file
Screen 8:

The backup report is available in CSV format.

CSV file for multiple IMAP mailboxes backup