The Email Revolution
www.open.email
A decentralized, secure email-like system that offers true end-to-end encryption and a sustainable, privacy-first model. It's a system that doesn't require trusting anyone with your data. It's open by design, without gatekeepers and barriers, available to all.

Just come across this. Haven’t dug too deep but sounds like an interesting opportunity. I think it can only succeed if it is fully compliant with current systems. Seems to only be mobile clients. No desktop? Are big tech going to permit this to grow? It would shut down a data mining opportunity …