How to Open Outlook OST Files On Mac in 2025

[RajSingh]

Opening Outlook OST files on Mac can be challenging because OST (Offline Storage Table) files are designed for Windows-based Outlook and are not natively supported on macOS. However, a manual process involves converting the OST file into a compatible format like PST (Personal Storage Table), importing it into Outlook for Mac. This requires first accessing the OST file on a Windows system and using Outlook's export feature to save it as a PST file. Once converted, the PST file can be imported into Outlook for Mac. This method, however, is time-consuming and requires a working Windows environment, as well as technical expertise to avoid data corruption or loss during conversion.

To simplify the process, using a specialized tool like Migrate Cloud Data OST Viewer Tool is highly recommended. This tool is designed to open and view OST files directly on a Mac without conversion. It eliminates the need for manual intervention, saving time and effort. Additionally, it ensures data integrity and offers advanced features such as file previews, selective extraction, and support for encrypted or orphaned OST files. With this tool, you can access your OST data effortlessly, making it a reliable and efficient solution for Mac users dealing with OST files.

 

[mariahirthe]

To convert OST file to multiple file formats including all emails, contacts, calendars, and other items without Outlook using OST Converter for Mac Software. This software can bulk export OST file in Outlook 2021, 2019, 2016, and other items without any data loss. It convert all OST data items with attachments into PST, PDF, MBOX, EML, etc. It is an easy to use application, novice users can easily export OST file without any technical skills. It was compatible with both macOS and Windows OS including Windows 11.