The best solution for converting OLM files into multiple file formats is the MacSonik OLM Converter Tool for Mac. It allows users to convert all the email items of the OLM database such as emails, and attachments into various file formats. The software provides you with an amazing feature of Backup or Migrating OLM files with or without Attachments. Using this tool you can Remove similar or duplicate email items. It excludes email attachments from the conversion/migration procedure without any data loss.