You appear to mean "directly before the @". Thanks for the clarification. Email::Valid::Loose further clarifies:

Email::Valid::Loose is a subclass of Email::Valid, which allows . (dot) before @ (at-mark). It is invalid in RFC822, but is commonly used in some of mobile phone addresses in Japan (like docomo.ne.jp or jp-t.ne.jp).

So the items identified so far:

• Allow /\.\@/
• Disallow /\@.*%/ (actually more, since you answered my question in the negative in a private /msg and promised more details later)
• Disallow CFWS w/in the address
• Require /\@.*\./
• Require /\.[a-zA-Z]{2,}$/
• Require RFC1035-compliant domain (except empty ones)
• Extend RFC1035 to allow domain labels that start with a digit
• Disallow quoting (usually of $local_part)
• Disallow escaping (usually of $local_part)
• Disallow /\+.*\@/
• Disallow "group"s (/$display_name:$mailbox_list;/)
• Disallow "name-addr" (/$display_name?$angle_addr/)
• Disallow "obs*" (obs-angle-addr, obs-mbox-list, obs-addr-list, obs-local-part, obs-domain)

---

---

Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!

Titles consisting of a single word are discouraged, and in most cases are disallowed outright.

Read Where should I post X? if you're not absolutely sure you're posting in the right place.

Please read these before you post! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

Posts may use any of the Perl Monks Approved HTML tags:

a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr

You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)

	For:		Use:
	&		&
	<		&lt;
	>		&gt;
	[		&#91;
	]		&#93;

Link using PerlMonks shortcuts! What shortcuts can I use for linking?

See Writeup Formatting Tips and other pages linked from there for more info.