An easy-to-use solution to export OST files to PST format is provided by WebbyAcad OST Converter.

Following are some of its major features:

1. Simple Interface: Accessible by everyone, even novices.

2. Batch Operation: Permit Bulk Conversion of OST files in batch mode.

3. Advanced Scanning Options: Quick and Deep Scanning for Repairing Damaged Files.

4. Selective Export: Export selective folders, emails, contacts, or calendars for conversion.

5. Preview Functionality: Examine data before the conversion.

Stepwise Process:

1. Open WebbyAcad OST converter.

2. Add the OST files to be converted.

3. Select PST as the output format.

4. All specific folders or items for conversion.

5. Hit on 'Convert' to begin the process and save the output file.