Sysvita OST Viewer is a virus-free, free tool for viewing and saving OST files in EML, MSG, and HTML format. A pro version is available, which allows you to migrate OST files to a variety of formats, including PST, Office365, Gmail, GSuite, HTML, PDF, and live Exchange.

The free version is equipped with features to help you recover ost file into EML, MSG and HTML file formats. However, if you're looking for an even more advanced experience, you can upgrade to the Pro edition. This unlocks all OST Viewer features to Export OST to PST, OST to Office365, OST to MBOX, OST to Gmail, OST to G-Suite, OST to Live Exchange Server, etc.
The OST Pro viewer Software easily recovers the password-protected file to recover mailbox data such as Emails, Calendars, Contacts, Tasks, and Notes. SysVita OST viewer support all versions of MS Outlook-like 2019, 2016, 2013, 2010, 2007, 2003 etc. and Exchange Server Support 2016, 2013,2010, 2007, 2003, 5.5, & 5.0.
What's more, the Pro Software has the ability to export OST to PDF, office365 & Split large OST to small size of PST file up to 1GB to 25GB. If you're dealing with archived OST files and need a 100% free and easy-to-use solution, do consider SysVita OST Viewer for your needs.
Version 1.0: Sysvita Data Recovery Company launches a freeware OST Viewer tool for Outlook users. this software is helping Outlook users easily repair and recover lost data from corrupted OST file and allow to save EML, MSG, and EMLX formats.