I had writen a function to send an email from Vb using MAPI functions. The code is shown below:

MAPISession1.SignOn
With MAPIMessages1
.SessionID = MAPISession1.SessionID
.MsgIndex = -1
.Compose
.RecipDisplayName = ccC
.MsgSubject = cS
.MsgNoteText = ""
.AttachmentName = Right(cDestino, 16)
.AttachmentPathName = cDestino
.Send
End With
MAPISession1.SignOff

My default email app is Incredimail.
It works fine, but always I get the same unexpected information in the body message:
--------------Boundary-00=_2Z56N0X1VA4000000000
Content-Type: Text/Plain
Content-Transfer-Encoding:


--------------Boundary-00=_2Z56N0X1VA4000000000--

What's wrong? How I can supress that message?

Thanks.