trash 1177572739 learn http://www.regular-expressions.info/email.html greycat 1225477134 forget greycat 1225477151 learn http://www.regular-expressions.info/email.html and http://xkcd.com/208/ bronze 1269706919 forget bronze 1269706962 learn http://www.regular-expressions.info/email.html and http://xkcd.com/208/ and one trhat works fora lot but not all: \b[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}\b e36freak 1312558225 forget e36freak 1312558239 learn http://www.regular-expressions.info/email.html and http://xkcd.com/208/ and one that works for a lot but not all: '\b[[:alnum:]._%+-]+@[[:alnum:].-]+\.[[:alpha:]]{2,4}\b'