Yep. We need to do Google. Every carrier has basically been coerced into using Google's hosted RCS service provider.

https://jibe.google.com/

Funny thing is the last I checked RCS still doesn't have any APIs/third party access and if you use a rooted device Google Messages will fail to send RCS even to the carrier's Jibe instance?

Yep, and now there's also device attestation a.k.a. root/jailbreak detection. If you fail it, no RCS for you at all. What a great open standard!

https://www.theverge.com/2024/3/1/24087418/google-messages-b...