You can use the
DRS OST Viewer Tool to scan and open complete OST file content like inbox, sent, draft, outbox, and trash. It is the most trusted and genuine OST File Reader solution to read OST files without MS Outlook. With the help of this OST Viewer Tool. You can check the Outlook mailbox items and the user can
Open OST File in Outlook 2019, 2016 & Below Versions. Also, it allows you to save emails in PDF, PST, MBOX, EML, EMLX, MSG, CSV, HTML, and DOC along with the working demonstration. The software works well with both the Mac and Windows OS.