Easily Convert OST to PST with the eSoftTools OST to PST converterhas the feature that it can recover emails that have been inaccessible without regard to their size. It also makes it easy to save additional attachments in the PST file format. And this feature ensures that everyone is satisfied at all times. If you have big OST files, these capabilities will save you a lot of time. You may use this OST Converter Tool to convert OST files to PST, EML, EMLX, MBOX, vCard, vCal, and HTML.