I'm cleaning up several old Outlook for Mac mailboxes that we no longer use, but I still need to keep the data for compliance and future reference. The OLM files contain years of emails, contacts, calendars, notes, journals, and tasks, so I want an archive that's easy to access later without risking data loss.

Instead of trying manual workarounds, I'm planning to use an automated desktop converter to simplify the process. One option I've been looking into is MacSonik OLM Converter because it supports converting OLM files into formats like PDF, PST, MBOX, EML, MSG, CSV, HTML, and EMLX. Having multiple output options would make it easier to store the data in a format that suits different departments.

I also like that it supports both single and batch OLM conversion without file size restrictions, since some of our archives are several gigabytes in size. The software claims to preserve the original folder hierarchy and maintain complete mailbox integrity during conversion, which is essential if we ever need to retrieve historical emails.

Another useful feature is the flexibility in handling attachments. Depending on the archive, I can choose to keep attachments with the emails, save them separately, convert them to PDF, or exclude them entirely to reduce storage requirements. Those options seem practical for long-term email retention.

For anyone who has used this software for archiving rather than migration, how well did it perform? Were the converted files easy to access later, and did everything—including folders, attachments, and mailbox items—remain intact after the conversion? I'd appreciate hearing about your long-term experience before I move forward.

Try - https://www.macsonik.com/olm/converter/