Email Routing subdomain support, new APIs and security protocols

The Cloudflare Team has announced new features for their email routing service. These include support for custom domain names, the ability to send emails from Workers, and the capability to reply to emails programmatically. Additionally, they've introduced subdomains support which allows using Email Routing with any subdomain of any zone in a user's account. These updates are designed to improve email security and functionality for Cloudflare customers.