How risky is it for Google sanning those mails in terms of privacy?
Afraid to tell you but Google already scans thousands emails if you use proton or not. The company you are sending mail to likely uses gmail internally. Does not matter how private your end is if the other end is wide open.
Though I am not convinced that anyone would care if you use a non gmail account for any technical role. Hell add a custom domain to proton and you can hide the fact you are using proton and create a even more professional looking address.
Afraid to tell you but Google already scans thousands emails if you use proton or not. The company you are sending mail to likely uses gmail internally. Does not matter how private your end is if the other end is wide open.
Though I am not convinced that anyone would care if you use a non gmail account for any technical role. Hell add a custom domain to proton and you can hide the fact you are using proton and create a even more professional looking address.