sales Magento_Checkout::checkout Magento\Config\Model\Config\Source\Yesno Enabling this setting will allow unauthenticated users to query if an e-mail address is already associated with a customer account. This can be used to enhance the checkout workflow for guests that do not realize they already have an account but comes at the cost of exposing information to unauthenticated users. Magento\Config\Model\Config\Source\Yesno Magento\Config\Model\Config\Source\Yesno Magento\Checkout\Model\Adminhtml\BillingAddressDisplayOptions validate-zero-or-greater validate-digits validate-zero-or-greater validate-digits Magento\Config\Model\Config\Source\Yesno validate-zero-or-greater validate-digits Magento\Config\Model\Config\Source\Yesno Magento\Config\Model\Config\Source\Yesno Magento\Checkout\Model\Config\Source\Cart\Summary Magento\Config\Model\Config\Source\Yesno validate-zero-or-greater validate-digits validate-zero-or-greater validate-digits Magento\Config\Model\Config\Source\Email\Identity Magento\Config\Model\Config\Source\Email\Identity Email template chosen based on theme fallback when "Default" option is selected. Magento\Config\Model\Config\Source\Email\Template validate-emails Separate by ",". Magento\Config\Model\Config\Source\Email\Method