You may easily export from OST to an Office 365 mailbox account.

If you're seeking for a tool that can Import OST to Office 365. You can use the DRS OST to Office 365 Migration Tool to recover your Office 365 mailbox data from an OST file. This program is an excellent alternative to time-consuming manual operations because it requires no technological knowledge. The software features an interactive user interface to help with the migration process. The OST to Office 365 transfer software has several impressive capabilities, as well as a practical demonstration.