I see similar questions and the answer is yes.
E.g. this post:
License GroupDocs - Free Support Forum - groupdocs.com
However, I’ve noticed that it works in most cases, but for GroupDocs.Metadata.NETFramework, I’m get…... msgFile: C:\Temp\GroupDocs\richtext.msg FileFormat...file is an MP3 file: msgFile: C:\Temp\Temp\GroupDocs\test.msg...