On off-line or Exchange Server downtime Outlook user want to archive E-mail, best technique OST File Conversion Tool get better result on off-line to user can easily Convert OST File to Outlook PST. User can download online to Convert OST File into PST file along with all E-mail properties. OST File conversion solution does work on off-line to converts Outlook OST file into PST file. When Exchange Server become corrupt due to any reason then use OST File converter software to converting OST file as PST file effortlessly. With help of this software use can access Outlook E-mail on off-line mode and restore E-mails from OST files.