Until they make it easy to bridge decentralized DNS queries with regular DNS even on mobile phones (without using a middleman) but apps that run and do this for

Until they make it easy to bridge decentralized DNS queries with regular DNS even on mobile phones (without using a middleman) but apps that run and do this for users, then no web3 is not bringing decentralized email. Also, email providers would need to bridge decentralized DNS and it is in their interests not to. So Gmail, Outlook, etc which most companies have migrated to will not support it.