Or have a look at the full RFC 2822 regular expression for matching email addresses: http://code.iamcal.com/php/rfc822/full_regexp.txt http://code.iamcal.com/p

Or have a look at the full RFC 2822 regular expression for matching email addresses: http://code.iamcal.com/php/rfc822/full_regexp.txt http://code.iamcal.com/php/rfc822/full_regexp.txt I'd personally stick with Sephr's advice, though ;-)