If you want to transfer/export Gmail Emails to another Gmail account then try eSoftTools IMAP Backup & Migration Software. You can transfer Gmail to another Gmail account in simple steps. Before buying the software, you can use the free demo which allows all users to backup 25 items from the email file folder along with the free demo. If you need to backup the data of a single email then you can do it automatically. And if you want, you can also take a backup of any date.