[1] [CITE@en[Web Applications 1.0 r7770     Update to e-mail syntax checking for better compliance with the relevant RFCs.]]
( ([TIME[2013-03-26 08:18:00 +09:00]] 版))
<http://html5.org/tools/web-apps-tracker?from=7769&to=7770>

[2] [CITE@en[Web Applications 1.0 r7978     Limit labels in e-mail addresses to 63 characters, not 255.]]
( ([TIME[2013-06-15 03:49:00 +09:00]] 版))
<http://html5.org/tools/web-apps-tracker?from=7977&to=7978>

[3] [CITE@en['''['''whatwg''']'''  Comments on the definition of a valid e-mail address]]
([[Ian Hickson]]著, [TIME[2009-08-31 14:53:47 +09:00]])
<https://lists.w3.org/Archives/Public/public-whatwg-archive/2009Aug/0807.html>