If you're looking for a way to migrate PST files into Office 365 format then MigrateEmails PST File Converter Tool would a great way to easily convert your PST files to different formats or migrate them to email accounts like Office 365, Gmail, and Yahoo Mail. It lets you move all your Outlook folders, like inbox and sent items, to other formats such as PDF, MBOX, or DOC without losing any data. You can add multiple PST files for migration, preview the file content, and even remove duplicates. The tool also allows you to exclude attachments and filter emails by date or tasks. It works on all Windows versions and has a free demo for testing.
Steps to migrate PST to Office 365:
Launch the PST Converter Tool.
Choose the Single File or Multiple Files option and click Next.
Select the PST files from your computer and hit Open.
Preview your mailbox items and click Next.
Choose Office 365 as the destination and other migration settings.
Click Convert to start the process.