Aspose.Email.Mail.MailMessage delivers wrong BodyType

Hi,

With our application we are archiving emails via IMAP using Aspose.Email (17.1.0.0).

If an email is formatted in RTF, I get as BodyType "PlainText". Is this an error or does Aspose internally convert the body?

CurrentMessage = Client.FetchMessage(this.CurrentItem.UniqueId);
Aspose.Email.Outlook.BodyContentType bodyType = CurrentMessage.BodyType;

Is there another way to find out the body type of the original email?

Best Regards