HOwever, E-mails from the cash or box team will only connect to square.com, squareup.com, cash.app or cash.me, cash.app/help. Cash Assistance will never ask you for a login code, PIN, social security number (SSN), and will never ask you to send a payment, make a purchase, or download any remote access application. Consequently, perform a "test" of transactions of any kind Although, you need to visit our website for more information.