Beefy Boxes and Bandwidth Generously Provided by pair Networks
We don't bite newbies here... much

Comment on

( #3333=superdoc: print w/replies, xml ) Need Help??

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 or

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)

- tye        

In reply to Re^4: Practical e-mail address validation (flexes) by tye
in thread Practical e-mail address validation by tye

Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":

  • 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! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, 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, 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:
    & &amp;
    < &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.
  • Log In?

    What's my password?
    Create A New User
    Jar. Jar!...

    How do I use this? | Other CB clients
    Other Users?
    Others browsing the Monastery: (8)
    As of 2018-02-21 05:58 GMT
    Find Nodes?
      Voting Booth?
      When it is dark outside I am happiest to see ...

      Results (275 votes). Check out past polls.