[[Explain why it's bad idea.  Always.  Point to Friedl RE,
link to REs, refer to Perl FAQ, and ...]]











[[Pertinent Perl stuff:
   * ASPN Cookbook 68432 [http://aspn.activestate.com/ASPN/Cookbook/Rx/Recipe/68432]
   * lyris.com validator [www.lyris.com/help/HowdoIvalidateEmailAddressesinmyPerlprograms_.html]
   * miscellaneous CPAN stuff, including Mail::RFC822::Address
   *





[Don Libes] wrote
"Authentication by Email Reception"
[http://www.nist.gov/msidlibrary/doc/libes96b.pdf]
to describe "use of email addresses as an authentication mechanism
... [[which]] provides reasonable security at very low cost ..."


[tcllib] / [mime] contains commands (mime::parseaddress, mostly) to parse email addresses.