Convert OST to PST for free online - Version 17.0 Best OST to PST Converter software to successfully migrate emails from offline Exchange OST file into PST file format in MS Outlook. It also export emails and other mailbox data from OST file into PST, EML, MSG, MBOX. OST to PST Converter Software exports emails from OST file into EML file which can easily be opened into Outlook Express, Windows Live, Thunderbird and other email clients. Best OST to PST Converter tool helps to restore offline OST file of any size and exports them successfully into Outlook PST format. This software tool is incorporated with advance features that make users to migrate emails from OST file into existing readable PST file or a newly created PST file. It also repairs and restores images, text file and other attachments from OST file. This software supports OST files created in any version of MS Outlook and converts them into different file format like MSG, EML,MBOX and MSG Unicode. It supports both 32 bit and 64 bit Outlook (2016 and older version) and easily accessible on all editions of MS Outlook. This OST to PST converter software offers trial version which allows to convert OST to PST without any cost but you cannot save them. For saving items into PST and other format, you’ll have to purchase the full version. The software is highly compatible with all Windows platforms.