MailsDaddy PST to Office 365 Migration Tool is a complete utility for Windows to migrate PST to Exchange Online. The software has multiple features to move Outlook PST data to O365 account. User can flawlessly upload archive and normal PSTs to Office 365 Primary, Shared, and Archive mailboxes. It is one of the best tool to transfer PST file emails, notes, calendars, tasks, images, etc. to Exchange Online cloud. An effective cloud- based Office 365 PST Import solution to import PST file to Office 365 mailboxes. It works in presence of internet connection without Outlook email client.