To migrate or export PST to Office 365 mailbox, I would suggest MailsDaddy PST to Office 365 Migration Tool. A solution preferred by lots of people as it offers a complete and secure way to import PST to Exchange Online accounts. The software provides the most effective way to upload the PST file to Office 365 using its valuable features providing the exact PST to Office 365 data conversion. Always maintains accuracy and consistent flow of migration. Even bulk PST file is also possible without any hassle and downtime. Easy to use this user-friendly software keeps its integrity.
Visit the official site to know how to import PST file to Office 365.