I decided against using ProtonMail precisely because of the lack of full-text search (you can search across email subjects, but only because [they aren't encryp

I decided against using ProtonMail precisely because of the lack of full-text search (you can search across email subjects, but only because [they aren't encrypted][1]). However, there is another zero-knowledge email provider who does have this functionality: [Tutanota][2]. Also, there is work on an interoperable standard for E2E-encrypted instant message: [MLS][3]. These are just two examples, but I wonder whether the gap between "standard" and privacy-preserving software is actually shrinking as demand for the latter rises. [1]: https://protonmail.com/support/knowledge-base/does-protonmail-encrypt-email-subjects/ https://protonmail.com/support/knowledge-base/does-protonmai... [2]: https://tutanota.com/ https://tutanota.com/ [3]: https://messaginglayersecurity.rocks/ https://messaginglayersecurity.rocks/