Sending email as MMS and SMS to mobile from php

[suresh_nsnguys]

Hi,
i will allow user to enter their email address in my application.i will send some message with jpeg image attachment as mail to their specified email id.

If user enter yahoo,gmail,rediff account id.They able to receive my email.When user enters SMS and MMS email ID(to get my email in their mobile).they are able to receive SMS but not MMS.

i think the MIME type that i am using is not supported by MMS- but i am not sure

My eMail MIME structure:

MIME version: 1.0
Content-Type: multipart/mixed; boundary="12345"
this is my plain text
--12345
Content-Type: text/html; charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
<p>This is My HTML message</p>
--12345
Content-Type: image/jpg; name="barcode.jpg"
Content-disposition: attachment; file="barcode.jpg"
Content-Transfer-Encoding: base64
<base64_encode jpg image binary data>
--12345--


i need 1 common email MIME format that will support both mobile and web email users.
i am looking for some help
A.suresh