Is that good? According to the wikipedia page it seems last stable release was 9 years ago. Is anyone using that? Last time I had a look at XMPP everybody was using OMEMO.
If there's one thing we learned from Snowden is that the NSA can't break PGP, so these people who live in the world of theory have no credibility with me.
I never saw a single speck of anything I ever sent to anyone via PGP in there. They had access to my SIGAINT e-mail and my BitMessage unlocked, but I used PGP for everything on top of that.
Stay safe!