To convert OST emails to Office 365 accounts, first use a reliable OST to Office 365 converter tool to transform the OST file into a PST format. Import the PST file into Outlook, which is connected to your Office 365 account. Then, move the emails from the PST file to your Office 365 mailbox and verify the successful migration.
To import OST emails to Office 365 accounts, follow these steps by OST to Office 365 Migration
Convert OST to Office 365 accounts: Use an OST to Office 365 converter tool to change the OST file into a Office 365 accounts.
Open Outlook: Launch Microsoft Outlook and ensure it is connected to your Office 365 account.
Import PST File: Go to File > Open & Export > Import/Export, and select "Import from another program or file." Choose PST and locate your converted file.
Select Destination: Choose your Office 365 mailbox as the destination for the imported emails.
Complete Import: Finish the import process and verify that all emails have been transferred to your Office 365 account.