extracting email lists

hi, was hoping somebody can help and i want to preface this by stating that it is NOT for unsolicited spam mail. i hate that crap. we have a bunch of emails from people that have contacted our site. they have been cut and pasted into a large word document. here is an small example of the format: <lasjkljsf@lsjdlkf.com> "THIS is - my....name", <kkjf_kdjf@ca.edu> "john", <kdjklfjd@lkdjlkf.com, lkdjf@kdjkljfd.com, fkdjkfjd@ldjkld.com> "hello there" with hundreds or thousands like that. i was wondering if anybody can help me with extracting just the email address from this large .txt file. i've tried opening the file into a variable with and without the htmlspecialchars() function and the < and > are causing problems, and i'm also not sure what regexp to use to either get rid of all the "people's names" or to extract the emails only. any approaches would be helpful. a regexp that just validates a single email address is no help it seems. thanks for any help.