Our development team investigated the issue.
1. The edges in the output PDF file are cropped.
This is not a bug of Aspose.Email, but a problem of Aspose.Words. If you open the original MSG file in Outlook and save it as MHT, you can use that MHT file to convert to PDF file using Aspose.Words. The resulting PDF document will be similar as after Aspose.Email (with cropped edges).
2. The button captions are different in the source MSG file and output MHT file created by Aspose.Email.
This is because the HTML body of the message contains MSO (Microsoft Office) tags that store the button captions that are visible in Outlook. We have no plans to support this technology in Aspose.Email.
I am moving this thread to Aspose.Words forum where the support team will continue to help you with the first problem.