RCS messaging app and microG

because SIGNAL messenger is stopping SMS support soon I am looking for an additional messaging app that is using RCS services. As I see it all RCS apps requires GSF. So I wonder if they do run with microG instead of GSF.
Any recommendation if this is possible and which app to use?

Thank you in advance.

Regain your privacy! Adopt /e/ the unGoogled mobile OS and online servicesphone


I have also looked into this and it seems that only Google Messages and Samsung Messages support this

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while there are open implementations to base an messenger App on, none is actively developed since years