The email validation in More doesn't allow for things like: Hello."<\ @!\\email\"*+$)#!".address@[IPv6:0::7f00:1]
But it's quite complete, allowing for the characters that are allowed outside of quotation marks, and allowing for IPv4 addresses as well. What it doesn't do is IPv6 domain part, quotation marks (and characters inside them) in the local part, and most of the length checking.
