Importing an OLM file to Office 365 can be challenging because OLM data is designed specifically for Outlook on Mac and cannot be uploaded to Office 365 directly. A practical approach is to use a dedicated utility such as MacSonik OLM Converter Tool, which can extract mailbox data from an OLM file and save it in Office 365-supported formats. The tool typically provides features like selective email migration, the ability to preserve folder hierarchy, conversion of emails, contacts, calendars, and attachments, and options to filter data by date or category. After converting the OLM file into a compatible format and signing in with your Office 365 credentials, you can smoothly upload your mailbox data and access it across your Office 365 account.
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