Migrating an OST file to another email client can be challenging because OST files are designed as offline Outlook data files and cannot usually be imported directly. If the original Outlook account is active, you can export mailbox data through Outlook. For orphaned, damaged, or inaccessible OST files, converting OST to PST is often a practical approach. ATS OST to PST Converter can convert OST files into PST while preserving emails, contacts, calendars, attachments, and folder structure. After conversion, the PST file can be opened in Outlook or used as an intermediate format for migration. Always create a backup before starting the conversion.

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