MailsDaddy OST to Office 365 Migration Tool is the best conversion software to provide users the solution to import OST to O365. It works to offers solutions to upload multiple OSTs to O365 at a single attempt. It performs all simple and impersonate export process from OST to Exchange Online. The OST to Office 365 Converter allows helpful in recovering the corrupted IMAP, Hotmail, and Exchange Server OSTs, preview them and migrate them to O365. It provides options to customize the OST to Exchange Online conversion process.