Thank you for contacting Aspose Support team.
Aspose.Email API doesn’t provide any viewer for previewing messages. However, you can export the MSG file to different formats for embedding in your viewer as an image. The following two types are supported:
- TIFF - see Converting messages to TIFF
- XPS - see Converting messages to XPS
You can also convert an email message to MHTML format for referencing. Our documentation article, Conversion of Messages to Other Formats
, lists all the possible conversions of email messages to other formats. Please check these at your end and let us know your feedback.