I’ve talked to a deltachat dev about this, and the signal protocol is simply technically superior to autocrypt (used by deltachat, etc.). It gives you many more guarantees about things like forward secrecy. There is standardization work to bring these benefits to autocrypt, but it will probably be a while. Signal also has the benefit of having a familiar setup for non-techy people, so it is easier to get people to use in my experience.
I’ve talked to a deltachat dev about this, and the signal protocol is simply technically superior to autocrypt (used by deltachat, etc.). It gives you many more guarantees about things like forward secrecy. There is standardization work to bring these benefits to autocrypt, but it will probably be a while. Signal also has the benefit of having a familiar setup for non-techy people, so it is easier to get people to use in my experience.
Interesting. Ease of use is one thing but requiring a phone number or email to setup an account is in my opinion annoying.