Just make use of OST to PST Tool that fix all OST file errors and safely recover OST emails, contacts, calendars, task, notes, inbox items, outbox items and appointments. You can use messages filtering option to recover emails by dates selection “From date” to “To date”. OST to PST Recovery Software helps to recover OST file and Convert OST to PST File. It also split large PST File upto 5GB. Software works OST version upto 2016