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Backing up your Outlook OST (Offline Storage Table) file is crucial for protecting your data in the event of corruption, accidental deletion, or account issues. If you have technical knowledge, then you can directly export your Outlook email to PST files. Still, if not, then you can take the help of some tools like GainTools OST Converter, which will help you out easily. Using this tool makes the backup process simple for the user for an accurate result and saves the OST files into PST format directly.

Backing up an Outlook OST (Offline Storage Table) file is a bit different from backing up a PST file, because OST files are just a local cache of your mailbox stored on the mail server (like Exchange or Microsoft 365). However, if you still want to create a backup of the OST file, here’s how to do it in a simple and clear way is using the TrustVare OST Converter. This tool will save your OST files in your desired format. Refer: https://www.trustvare.com/ost/