msoMailFormat

(no mso prefix) Specifies the mail format of an email message.

mfHTML	HTML (Hyperlink Markup Language) formatting.
mfPLainText	Plain Text.
mfRTF	RTF (Rich Text Format) formatting.

mfHTML

HTML (Hyperlink Markup Language) formatting.

mfPLainText

Plain Text.

mfRTF

RTF (Rich Text Format) formatting.

REMARKS

* Added in 2010.
* These are the formats supported by Outlook.
* This enumeration is actually just MailFormat (there is no "mso" prefix).