These days I've researching on encrypted messaging, and this one took my attention 👀
https://unsigned.io/software/LXMF.html

main problem with encrypted stuff is a good ratio between usability and security, when usability is "easier than what we already know", being IRC, Whats, Discord among others. Where I should keep my messages even if my passphrase or keys are lost.
And security is that black and magic box that is supposed to keep my privacy.

Interesting challenge!