[tptacek]

If they're "just Android users", they don't have iMessage accounts.

[gnicholas]

So your thinking is that these end-users have signed some sort of agreement with Apple, and that agreement says they won't use any unauthorized services to connect to Apple servers, or some such thing?

[tptacek]

That's not "my thinking" so much as it is a fact.

[gnicholas]

If it’s a fact then it should be no trouble to share the relevant provision.

I was sharing that theory as a conjecture, since I have no reason to believe such a provision exists.