Yeah, this does absolutely not solve the CLOUD Act issues. However, it is good to look at what the ramifications of the CLOUD Act is for e-mail:

- The US could request your data. You probably shouldn't use e-mail for anything sensitive anyway for many reasons. E-Mail was traditionally not encrypted and I think that many servers still allow plain-text communication. The protocols are old and there are all kinds of downgrade attacks. Aside from that, even if your service does not fall under the CLOUD Act, you are probably f*cked anyway, because most people you communicate with are using services that fall under the CLOUD Act.

- The US can force the provider to block your account. The workarounds are: regularly backup your e-mail (easy for services that offer IMAP) and, most importantly, use a domain with an extension that is not under the control of a US (or probably five eyes) registrar.

Use an E2E-encrypted messenger with perfect forward secrecy, etc. for most personal communication.

Something like 99% of email is now done over TLS.