MailsDaddy OST to Office 365 Migration Tool provides a straightforward solution to damaged, IMAP, Hotmail, offline, Exchange Server or inaccessible OST files to move to O365. It previews OST file before migrating to Exchange Online and user can see the entire details of the OST data. OST to Office 365 Converter takes care of each Outlook OST item and prevents them from any kind of damage or corruption. The tool provides a smooth data conversion from the OST data file to Office 365. Supports Windows OS and Outlook OSTs all each edition to perform the process to upload OST file to Office 365 Exchange Online.