If you refer to the storage, I think that encrypted email makes little sense if both parties don't have it, your recipients are always the weak link in the chain. You keep your data encrypted and then the recipients share it with Google...

Btw, at the end encrypted storage has some value, Proton and Tuta seem the most solid services.

Proton

Proton + Addy.io for alias email addresses

Proton

for GrapheneOS users Gmail is weel suited they can use GPG but GrapheneOS users don't give a s about privacy