The migration of the data files from OST to Office 365 mailbox is not a big deal to perform if you use the Outlook OST to Office 365 Converter tool through which the even the non-technical user can migrate the OST file into Office 365 mailbox directly just in a few clicks. Its quickly effortlessly import OST to Office 365 or other files like Zimbra, Gmail, EML, EMLX, vCard, ICS, MSG, PST, Live Exchange server, MBOX and etc. More info-
This software is very much reliable and safe for performing this process. To try this tool you can visit here:- Convert OST to Office 365