https://www.apple.com/legal/privacy/data/en/messages/
Apparently, they are against ANY commercial messages. Even if I personally sent marketing messages and typed them myself. So of course they are not going to like you making it easier for people to do that at scale.e
Technically, you are right that being programmatic is not the issue (so presumably those openclaw adapters are okay).
But let's not mislead investors or customers -- Apple has clearly stated your use case is not welcome (except through the iMessage Business Program they control).
Push notifications, attached to an application or website, and controllable by a user on that basis, are the solution for corporate messaging at scale.
This will get you banned. It’s not a question of if, but when. Users will hit the report spam button. Apple will shut you down.
This is in direct violation of the terms of service, and Apple invests a lot of money in keeping iMessage clean of this kind of misuse.
They control the servers, the client, certificate provisioning, hardware identification, and user identification. They can trivially trace a registered account to the point of sale and the card and PII used to buy the hardware on which the account was registered.
You will fly under the radar for just as long as it takes to annoy enough of their customers that Apple brings down a massive ban hammer.
iMessage fully supports RCS.