OST file Converter software Free?

The Vartika OST to Office 365 Converter offers an efficient and secure way to convert OST files to Office 365 accounts. It supports the migration of all mailbox data, including emails, contacts, attachments, calendars, and more. The software maintains data integrity and folder structure during the process.  

https://www.vartikasoftware.com/product/vs-ost-to-office365-converter.html

Key points:

1. No need for MS Outlook during migration.
2. Supports conversion of corrupted or password-protected OST files.
3. Selective migration of specific folders or emails.
4. Maintains the folder hierarchy.
5. Converts multiple OST files simultaneously.
6. Supports offline conversion.
7. Compatible with all MS Outlook versions.
8. Easy-to-use interface.
9. High-speed conversion.
10. Free demo available for testing.

More details: Vartika OST to Office 365 Converter.