<?php
$msg = '
asdas asdasd asdas aline_ca1@hotmail.com asdasd asdas asdas
asdas asdasd asdas aline_ca2@hotmail.com asdasd asdas asdas
';
preg_match('/([_\-.a-zA-Z\d]{1,30})@([_\-.a-zA-Z\d]{1,30})([.]{1})([_\-.a-zA-Z]{1,10})/', $msg, $output);
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