RTFM...!!!!!!!!!
What make/model phone, do you have it wap enabled/GPRS enabled? If you are not sure then I bet you have not set it up with vodaphone yet. Might cost you extra for these.
Can you not just send the picture as an MMS to the e-mail address? I can do that on mine but I must have GPRS enabled etc.
I can now check for e-mails on my bt account using my phone. Don't know why, just though I would try it and see and I now can. I am with Orange and they offer the service at an additional cost.(extra £4 or something like that a month.)