A friend of mine told me it was possible to send/receive SMS/MMS messages through the BES as opposed to sending them over the Cingular/AT&T network, which is costing me $10.00 a month.
Is this true? I find it hard to believe that AT&T would allow that....
You'd need a 3rd party app on the BES doing this for you. You can send email through the web, proxy web / apps through the BES, but by using your HH and doing an SMS or PIN, your device is talking directly with the carriers network