The OST to PST converter allows you to transfer Outlook for OST information over to Outlook for Windows by converting it to a PST file format. The conversion will carry over your entire email messages, contacts, calendar entries, and all attachments while maintaining the original folder structure; formatting; and essential details associated with each message, such as the author, subject, date it was received, and if you had marked it as read (or unread). You may convert either small or large mailboxes and choose to convert only certain folders/items (if needed) instead of exchanging all folders/items from the OST format. To perform this type of file conversion, it's simple: add in the OST file you wish to convert to PST, pick your conversion options and destination location, run the conversion, and import your newly created .pst file into Microsoft Outlook on your new Windows machine. This tool protects your data when changing and will not alter (or delete) the original. OST files during the conversion process.