Which tool is Independent solution to migrate IMAP server emails to another IMAP.IMAP Mail Migration Tool offers migration of cloud emails of one account to another account .Without limiting the number of emails, one can export data of one cloud. The size of mailboxes does not matter, one can easily migrate webmail emails of one account. You can export emails of these clouds to another cloud. This includes Gmail, Yahoo, Office 365, Google Apps, AOL, Hotmail, and several other accounts .The utility is so lightweight that it uploads to your system in less than 5 minutes and allows users to export the data at a fast speed.
Follow this link :- betavare/cloud-migration-tool/