obvio q existe
Código PHP:
$res=mysql_query("select email from emails");//obtener todos los emails
if(mysql_num_rows()<=0){die('no hay emails');}
while($row=mysql_fetch_assoc($res)){
if(!filter_var($row['email']),FILTER_VALIDATE_EMAIL){//el formato de email es valido?
mysql_query("delete from emails where email ='".$row['email']."'");//borrar emails defectuosos
}
}
espero te sirva
