Want to get a quick solution to instantly convert the OST file into PST Outlook file format or export OST items to Office 365 because your important OST file is corrupted by any type of error issue. Multiple methods are available in the online market to repair the corrupt OST file and convert it into PST file but you have chosen the right program from these options. I will recommend to all Outlook users to try this eSoftTools OST to PST Converter Software. This tool is specially designed with some advanced techniques to make the simplest conversion of OST file to PST by each user. It is able to convert the OST file into multiple different file format including- PST, EML, EMLX, MSG, HTML, vCard, CSV, MBOX, and additionally offers to export OST to Office 365 cloud storage to save space in your machine. Get a free trial version of this software that permits users to see the working process of this software and also the free demo version allows users to recover selective 50 items from each mailbox of OST file to all formats free of cost.
Get More Info:- OST to Office 365

- Go to Files >Open & Export and click Import & Export.
- Select Export to a file; then click Next.
- Select the second option—Outlook Data File
- Select the folder which you want to export and click Next.

Read: Why PST to Office 365 migration makes sense?