http://www.whatwg.org/specs/web-apps/current-work/#e-mail-state
A valid e-mail address is a string that matches the production
dot-atom-text "@" dot-atom-text
where dot-atom-text is defined in RFC 5322 section 3.2.3.
[RFC5322]<http://www.whatwg.org/specs/web-apps/current-work/#refsRFC5322>
I'd like stricter rule for it. e.g.
dot-atom-text "@" 1*(ALPHA / DIGIT) 1*("." 1*(ALPHA / DIGIT))
I understand the current production, dot-atom-text "@" dot-atom-text, is a
subset of addr-spec of RFC 5322. However dot-atom-text for the domain-part
is not practical. The production accepts apparently unusable email address
like "tk...@!!!!"
--
TAMURA Kent
Software Engineer, Google
