He probado todo. Validad EMAIL

[Hidek1]

Código PHP:

function checkEmail($email){
    $reg = "#^(((([a-z\d][\.\-\+_]?)*)[a-z0-9])+)\@(((([a-z\d][\.\-_]?){0,62})[a-z\d])+)\.([a-z\d]{2,6})$#i";
    return preg_match($reg, $email);   
}