SmtpClient.Add (gb.net.smtp)

Sub Add ( Data As String [ , MimeType As String, Name As String ] )

Adds an attachment to the mail.

Data is the mail data, usually got directly from the file you want to attach.
MimeType is the mime type of the attached data. By default, it is text/plain.
Name is the name of the attachment. It will be automatically generated if not specified.

At the moment, not all mime types are supported.