I'll be more impressed when Gmail supports RFC'd headers like Resent-From and Resent-To. They were in RFC 822 (1982) and are still in RFC 2822 (2001). How can

I'll be more impressed when Gmail supports RFC'd headers like Resent-From and Resent-To. They were in RFC 822 (1982) and are still in RFC 2822 (2001). How can an email client be written that doesn't handle these basic headers? It suggests the RFCs weren't read.