Easy way to convert your MSG files to multiple file formats with the help of third-party software because the manual way is hard and not all users can convert their MSG files. Also, with the manual method, there are lots of restrictions or risks. So, the best and easiest way to convert an OST file to a PST is by using third-party software. There is a lot of software, but I suggest my favorite tool, MacSonik MSG Converter. With its user-friendly interface, this tool provides an easy and efficient method for transferring MSG files to various file formats like PST, EML, MBOX, EMLX, and others.