Dr-Hack
also see the "Trust Utopia or Not" part in this article : https://blog.drhack.net/utopia-p2p-ecosystem-crypto-mail-data/ where some questions were asked from the team ... you can access the blog in Utopia ecosystem aswell
I've taken a look in browser (had to enable ad blocker, incredibly high number of ads there, sorry) since I didn't know how top open in Utopia itself. I was impressed when I've read that the current state of Utopia means 5 years of development. Wow. I didn't hear yet of projects with this level of patience (and hard work). WTG!