OpenPop.NET POP3 Library Documentation

MessagePart.ContentDisposition Property

Used to describe if a MessagePart is to be displayed or to be though of as an attachment.
Also contains information about filename if such was sent.

a null reference if no Content-Disposition header field was present in the message

public ContentDisposition ContentDisposition { public get; private set; }

See Also

MessagePart Class | OpenPop.Mime Namespace