Mail::RFC822::Address: regexp-based address validation Posted by metafnord on Thursday April 16, 2015 @07:19AM from the ex-parrot.com dept. http://ex-parrot.com/~pdw/Mail-RFC822-Address.html ( 2 comments | on HN )
I don't care enough about offline email validation to figure it out carefully, but I have the idea it is one.