To upload OST file to Office 365 you can download and try MailsDaddy OST to Office 365 Migration Tool that allows flawless, smooth and quick data conversion with the Exchange Server or the Microsoft Outlook. It is capable of providing migration using its email properties like To, Bcc, Subject, Date, etc. It offers an advanced and innovative way of OST to Office 365 conversion through its highly advanced features.
The tool consists of both bulk or impersonate export options, allows individual conversion of OST contacts or calendar to Exchange Online mailbox either Primary or the Archive. Suitable for Windows OS of editions 10, 8.1, 8, 7, etc.
Know more: http://www.osttooffice365.com/
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