If your recipient's bank or credit union isn't with Zelle, don't worry! The list of participating financial institutions is always growing, and your recipient can still use Zelle by downloading the Zelle app for Android and iOS. To enroll with the Zelle app, your recipient will enter their basic contact information, an email address and U.S. mobile number, and a Visa or Mastercard debit card with a U.S. based account (does not include U.S. territories). Zelle does not accept debit cards associated with international deposit accounts or any credit cards.