Sending mail via OE or ...

Hi,

I need to send a mail message (with text, pictures, etc.... mime) via the users mail client
from a VB 6 program.
Now, i tried with shellexecute api, but that only accepts a very limited number of characters (about 400). I allso tried shell with mailto: , same result.
It must be possible, since apps like webcam do the same thing, they try to send the mail immidiatly (with the video image in it), and if that fails you'l find it in your Outlook (express) or other common mail client.

Any ideas how to do this ?

Steven