> Users with a consumer Google Account (such as Gmail users) can't access client-side encrypted content, send encrypted email, or participate in client-side encrypted meetings.
> To view or edit client-side encrypted content, users must use either the Google Chrome or Microsoft Edge (Chromium) browser.
So what happens with Search?
So if you're looking for "Nigerian prince" it will look up "Avtrevna cevapr" and return references to the emails containing that term.
https://esl.cs.brown.edu/blog/how-to-search-on-encrypted-dat...
might allow for some options to solve this problem.