A new smtp protocol with:
- mandatory encryption, mandatory validation of certificates
- certainty on the sender (effectively a mandatory hardfail spf)
- ideally decoupling the email address from the provider running the mail server (users shouldn&#x27;t be prisonners of a gmail or a yahoo)<p>[edit] also a system of extended validation for signatures like for ssl certificates would be useful. I would end up expecting a nice green logo in my mail client for emails from citibank.com, something cit1bank.com could not achieve.<p>[edit2] also a modern design would require emails to be instantaneous. All these messenger apps would become redundant and we would revert to a common standard.