That's crazy. The protocol for iMessage is so complicated that I gave up very quickly after getting IP banned many, many times, it's an incredibly sensitive service to things like this. At the time I just wanted to be able to check if an email address was iMessage-supported, but it required piles of signatures and other authorisation.
It will get banned on Apple's end so quickly, but not before it's used to send mountains of spam.
Haha, same here. Instead I wrote an app that uses the iMessage Mac client to insert a mail address into the to: field and check whether it supports iMessage. And then I use pixelbuffer data to figure out whether the mail address has the correct iMessage supported color in the ui. Works great, but is a bit slow.
It will get banned on Apple's end so quickly, but not before it's used to send mountains of spam.