It's the Super Heavy - the first stage of the Starship which is the second stage.

Sure, my mail can be encrypted in storage. It all depends how much you trust your mail provider.

Note that encrypting uses more CPU than plaintext does, so it costs more money in the long run. Now think from the perspective of a mail provider: "What do they care that their emails are not encrypted if they have no way to verify that?" At some companies (Google for instance) I'm sure they do everything in their might to store the mails securely. But they have to obey every order from the government and yield mails, so that means they store encryption keys which makes it a moot point. Note that even privacy advertised mails like protonmail obey government subpoenas and lie to their users that they don't store the keys while they do.

Your mail is stored as a plaintext, so everyone that has access to mail providers could read it. Stop using mail systems. Or encrypt your every message with PGP and have the other parties do the same. Both are really cumbersome.

Is being not spied on possible? Yes. Will it exclude you from the society? Yes.