The mail encoding type (e.g. quoted-printable, etc)

[Visual Basic]
Protected _encodingtype As EncodingType
[C#]
protected EncodingType _encodingtype;
[C++]
protected: EncodingType _encodingtype;
[JScript]
protected var _encodingtype: EncodingType;

See Also

AbstractEmailAttachment Class | DotNetOpenMail Namespace