You are able to send multimedia content, such as MP3 and JPEG files using WAP PUSH technology. A WAP PUSH message is a special SMS message that will prompt the user to download a file. The WAP PUSH message itself contains some the URL to the resource to download (this be located on your servers).
WAP PUSH message cost one credit like a normal text credit. The end user will be charge for the data transfer of the file at the normal GPRS tariff.
WAP PUSH messages can be submitted via the following interfaces:
HTTP Interface - HTTP/S interface that can to send automated messages from most programming languages
COM Component - COM Programming API, recommended if you are developing in ASP, VB or C++
.Net Component - .Net Programming API, recommended if you are developing in .Net or ASP.Net
Please note, it is not possible to send WAP Push messages to customers on the Three network. The alternative is to send a regular SMS message with an embedded URL. You URL will still require prior approval from the Three network, a process that can take up to 3 months.