MailsDaddy Email backup tool is the best solution to open and migrate IMAP emails to Outlook PST, MBOX, EML etc. format at once. The application supports all Webmail email clients like Gmail, Yahoo, AOL, Rediff, etc. It automatically IMAP server folder structure and export in the same order in resultant file. You can also choose a free demo first and migrate up to 20 emails from each folder.