Proton offers a whole ecosystem of services – #ProtonMail, @7905f19a, #ProtonPass & #ProtonDrive – that allow you to put your privacy first. It's the exact opposite of Google. Read more about how #Google thinks your data belongs to it instead of you: https://proton.me/blog/google-privacy-washing-android
Google with PGP is safer than using your service. -Private keys with passphrase on user's computer - not on your server; -Encrypted Subject - not as on your service unencrypted! -Free POP3 or Imap protocol - on your service even using paid plan user has no access to these protocols without additional software. Your walled garden is worse than Google's.