[1] Web Applications 1.0 r7770 Update to e-mail syntax checking for better compliance with the relevant RFCs. ( ( 版)) <http://html5.org/tools/web-apps-tracker?from=7769&to=7770>
[2] Web Applications 1.0 r7978 Limit labels in e-mail addresses to 63 characters, not 255. ( ( 版)) <http://html5.org/tools/web-apps-tracker?from=7977&to=7978>
[3] [whatwg] Comments on the definition of a valid e-mail address (Ian Hickson著, ) <https://lists.w3.org/Archives/Public/public-whatwg-archive/2009Aug/0807.html>