These come through as an email address and with I believe the stock app and Handcent I can reply to these the four digit code associated with an alert to acknowledge them and sort of take responsibility for fixing the issue. I was kind of wondering why only some apps support this and how some of them just fail to send. I was also kind of hoping there was a way to make all sms applications support this. I believe the apps that support it are converting from sms to mms because the target is an email. Which brings me to my apology if this is already a thread somewhere. It's incredibly difficult to search using the same keywords someone would use to do the opposite of what you're looking for. If a solution for this exists I'm sorry. Anytime I search for a solution to this I get "how to stop sms converting to mms" and many other similarly titled threads. Any ideas?