How to Convert MS Outlook PST is important question and the answer is very easy, Use GainTools PST Converter and convert MS Outlook PST into multiple file extensions like MBOX, EML, EMLX, MSG and VCF, HTML, MHTML and ICS file formats.
Open GainTools PST Converter Software and browse your Personal PST file.
Software will show you complete mailbox preview, check and click on Export button.
Here you will find out multiple options to Export your PST file. Choose right option and click on Convert Now button.
If you want to export selected emails into HTML or MHTML format, then right click on that email and export emails into HTML or MHTML file format.
To Export calendars into ICS format, right click on any calendar item and export into ICS.