It probably enables nice use cases but I hope it does not spread too much. Major features an email have: - it does not change (except for external resources,

It probably enables nice use cases but I hope it does not spread too much. Major features an email have: - it does not change (except for external resources, which are blocked by default anyway), - works offline, - can be read in ten years just fine. I want my mails to remain static and available and I don't think I'm okay with them running some uncontrolled code.