<prompt> Unda mchoro wa regex ili ulingane na anwani halali za barua pepe.  <response>: Mchoro wa regex a-zA-Z0-9.!?_-a-zA-Z0-9?:a- zA-Z0-9-0,61a-zA-Z0-9??:.a-zA-Z0-9?:a-zA-Z0-9- 0,61a-zA-Z0-9? italingana na anwani halali za barua pepe. 