Emails from the cash or box team will only link to square.com , squareup.com , cash.app, or cash. Me, cash.app/help . If the email contains a link to another website, Square will not send it cash. app/help, or via a voice connection provided to customers from the Cash app. Cash Support will never ask you for a login code, PIN, Social Security Number (SSN), and it will never ask you to send a payment, make a purchase, or download any remote access app. Or perform a "test" of transactions of any kind. Although, you need to visit our website for more information.