/// <summary>
/// Add an image which is referred to from another part of
/// the email (probably the HTML attachment). You should
/// set the ContentID of the file attachment before passing
/// it in.
/// </summary>
/// <param name="fileattachment">The file attachment</param>
public void AddRelatedAttachment(FileAttachment fileattachment) {
_relatedfileattachments.Add(fileattachment);
}
/// <summary>
/// Add an attachment which will appear to the user as
/// a separate file. (It is not referred to in the email itself.)
/// </summary>
/// <param name="fileattachment">The file attachment</param>
public void AddMixedAttachment(FileAttachment fileattachment) {
_mixedfileattachments.Add(fileattachment);
}