You can convert multiple OLM files to PST at once using SysInfo OLM Converter. The software supports bulk conversion, allowing you to add multiple OLM files individually or select an entire folder containing OLM files. After adding the files, you can preview mailbox data such as emails, contacts, calendars, notes, tasks, and attachments.

Select the required mailbox items and choose PST as the output format. You can also apply filters to export specific emails, remove duplicate data, exclude attachments, or split a large PST into smaller files. The tool preserves the original folder hierarchy and important email properties during conversion.

SysInfo OLM Converter does not require Outlook for Mac to be installed, making the process convenient for users who need to convert multiple OLM files in bulk. Its simple interface allows both technical and non-technical users to complete the OLM to PST conversion efficiently while maintaining data integrity.
Read More - https://www.sysinfotools.com/olm-converter.php