Email spam filters didn't/don't actually work that well without de-anonymizing features like SPF and DKIM. I'm not saying that spam is a problem today, but tha

Email spam filters didn't/don't actually work that well without de-anonymizing features like SPF and DKIM. I'm not saying that spam is a problem today, but that the design goals of Richochet don't allow it to deal with the spam problem for users who actually want anonymous messaging.