Hey, are you facing a problem converting OST to PST with an attachment? Then instead of using the manual method, you need to use the professional method to use it. Because converting OST files to PST is quite difficult because the manual method is a slow and time taken process. It also requires a technical method to convert it. But, I'm gonna suggest to you the best method to convert it. That is a professional method to convert OST to PST but to execute the professional method you need to use the Data Recovery Freeware OST to PST converter. This OST to PST converter convert OST file to PST, PDF, HTML, DOC, DOCX, HTML, MHTML, etc. However, this tool transfers the OST file to a number of email clients like Office 365, Thunderbird, Yahoo mail, Gmail, etc. It also maintains the data hierarchy throughout the conversion process. It is compatible with windows and outlook. 

Professional Methods to convert OST to PST

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

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

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

- Now select the file format to convert and set the path to save button. 

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