Are you seeking for a solution to migrate Exchange to Office 365 and vice versa? In this case, I would be happy to help you. Shoviv is providing a professional tool named Exchange Server Suite that works smoothly to migrate Exchange and Office 365 mailboxes. The software migrates individual as well as multiple mailboxes concurrently from Exchange, Office 365, Outlook Stores, PST, EDB, and OST into PST, EML, MSG, Office 365, Live Exchange Server, and Outlook Stores. It displays mailbox folder items count in preview.
Note: It has a demo version and a good technical support team as well.