To backup IMAP Account? Then I would like to suggest that you can also try Mailsbackup IMAP Backup Tool to backup IMAP mailbox emails to local PC as PST, MBOX, EML, PDF, etc. IMAP Backup and Restore tool enables to backup IMAP Server and IMAP account to IMAP, Gmail, Office 365, etc.You can also download FREE Demo of IMAP Backup Software which permits to create IMAP backup mailbox into multiple file saving options.

Check for more details at: https://www.mailsbackup.com/imap/