Hello,
FYI:
Dim MyMapiMessage As MapiMessage = MapiMessage.Load(str, loadopt)
MyMapiMessage.Headers.Set("X-Mailer"...
Dim SignedMessage As MapiMessage = New Email.SecureEmailManager().AttachSignature(MyMapiMessage, MyC…...Save(out, saveopt) source msg: IPM.Task 3 Categories:...Note.SMIME.MultipartSigned source: 3 flags: MSGFLAG_READ MSGFLAG_NOTIFYREAD...