You can view, open, and save OST files without Outlook with the most recommendable and trustable tools like Aryson OST viewer. This professional utility comes with amazing features. That makes it different from another professional tools. It saves the OST file into many other document formats like HTML, PDF, CSV, etc with attachments. This OST viewer enables its users to read the OST file and save them into their desired email file formats like MSG, MBOX, and EMLX. It saves time by adding multiple OST files at once and shows a sneak peek of OST files with attachments. In addition, it views OST files and saves its attachments in PDF format separately. It facilitates you to show the OST file content like contacts, calendars, tasks, journals, etc. The advanced feature of this tool shows the deleted OST emails and saves them in different file formats like TXT, HTML, PDF, and other file formats easily. 

Now let's see how its works

- Download Aryson OST viewer in your system. 

- Now hit the "Add file" button to open OST files for scanning.

- Now choose the "OST file" and tick on the "Open Button".

- Then hit the "Next" button and retrive "OST files".

- Now pick the OST file inbox item and sneak them. 

- Now select the "migrate as" wizard from tool wizard.

- Now hit the "Save Button" to save the OST file into your desired file format.