>messages encrypted with forward secrey can still be sent over SMTP. deltachat devs are working on that.

OTR has had forward secrecy for 21 years. The effin headline stated PGP was a faulty model https://dl.acm.org/doi/10.1145/1029179.1029200

Why implement something PGP-like, without forward secrecy, 13 years later, beats my understanding. I mean, 13 years is also the time difference between OTR and PGP. I guess some devs don't read cornerstone papers of the field they supposedly specialize in :)