To easily migrate OST emails to Office 365 accounts, follow these steps:
Use a Conversion Tool: Employ an OST to PST converter to transform OST files into PST format.
Import PST to Outlook: Open Outlook and import the PST file using the “Import/Export” feature.
Connect to Office 365: Ensure Outlook is connected to your Office 365 account.
Drag and Drop Emails: Move emails from the imported PST file to your Office 365 mailbox.
Verify Migration: Check the Office 365 account to ensure all emails have been successfully migrated.
https://www.vartikasoftware.com/product/vs-ost-to-office365-converter.html
