Best way to export contacts from OST file to PST or any other file format. Then you must need to use the professional solution instead of using old traditional solution. To execute the professional solution all you need to use the professional tool like Data Recovery Freeware OST to PST Converter Free. This OST to PST converter convert OST to PST, HTML, PDF, DOCX, MHTML, HTML, etc. This OST converter maintains the data hierarchy while converting the OST file. It also export the OST file to the number of email clients like Office 365, Thunderbird, Yahoo, etc. If you want to convert OST file in bulk then you can do this without any file size limitation, However, this tool export every attachments to PST including contacts, tasks, calendars, etc. It is compatible with the all the version of Windows.

Steps to export contacts from OST 

- Download and install the OST to PST in your system.

- Then select the OST file to convert and click on the next button.

- Now select the OST file/folder to preview and click on the next button. 

- After this select the file format to convert and click on the next button.

- Lastly click on the convert button to start the conversion process.