For quick & secure migration from PST to Office 365, users should try MailsDaddy PST to Office 365 Migration Tool. This safe solution helps to import PST files into Office 365 without any changes in the original contents. Here users can also directly move PST files into Exchange 365 Primary, and In-Pace Archive mailboxes.
To know more, visit here: https://www.mailsdaddy.com/ost-to-office-365-migration-tool/