@jens @futureisfoss @aral I've been thinking along similar lines. I have tremendous respect for Aral and what he's building but maybe for some use cases a domain-less solution would be an option? Maybe ActivityPub json (or other protocol) could be transmitted via email? Or a loose store-and-forward network like Usenet which is agnostic as to the underlying transport layer? To be sure this loses some functionality, but I can imagine upsides in some cases too.