If one is content with remote-controlling Google's proprietary implementation, it can unofficially be done by leveraging the Web UI: https://github.com/mautrix/

If one is content with remote-controlling Google's proprietary implementation, it can unofficially be done by leveraging the Web UI: https://github.com/mautrix/gmessages https://github.com/mautrix/gmessages That however does come with all the drawbacks of adversarial interoperability.