$re = '/(([A-Za-z0-9]+\w*[\.\-]?){1,}+\w*@([A-Za-z0-9]+\.){1,2}[A-z]{2,3})/i';
$str = 'Outbound","1F280088DCA6184493AB7BDEE13D21022DD048CF@HOR-P1-MBX4.visanet.corp","RES:_Grupo_Especial_para_Quem_é_Especial","vanderleysilva@shconsorcio.com.br","raffael.vargas@cielo.com.br",2015-05-27 12:54:26,65636,2015-05-27 12:54:26,"Nenhum","Cabeçalho adicionado",",2,"Êxito mail1.prestadorcbmp.com.br';
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
// Print the entire match result
var_dump($matches);
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php