Ost Leave feedback On this page EmailFormats.Ost field See Also EmailFormats.Ost field Offline Storage Table (OST) file represents user’s mailbox data in offline mode on local machine upon registration with Exchange Server using Microsoft Outlook. Learn more about this file format here. public static readonly EmailFormats Ost; See Also class EmailFormats namespace GroupDocs.Editor.Formats assembly GroupDocs.Editor Was this page helpful? Not really Yes, thanks Any additional feedback you'd like to share with us? Skip Send Please tell us how we can improve this page. Skip Send Thank you for your feedback! We value your opinion. Your feedback will help us improve our documentation.