如何通过JavaScript（ApplePaySession）获取Apple Pay关联账户的用户邮箱？

Hey there! Let's break down your questions about accessing user email addresses through Apple Pay:

1. Does Apple provide an API to fetch the email linked to an Apple Pay account? #

Short answer: No, there’s no standalone API that lets you directly retrieve the email associated with a user’s Apple Pay account. Apple prioritizes user privacy, so they don’t expose account-level contact info like Apple ID emails via public APIs.

The only way to get a user’s email in the context of Apple Pay is if the user explicitly grants permission during a payment session. This email isn’t pulled from their core Apple Pay account—it’s the contact info they choose to share when completing a transaction (which might match their Apple ID email, but isn’t guaranteed).

2. Are there other JavaScript methods to get a user’s email with ApplePaySession? #

The primary (and only supported) way to retrieve a user’s email via Apple Pay JS is by requesting it as part of your payment request and accessing it in the payment authorization callback. Here’s how it works:

Step 1: Request the email in your payment request #

When creating your ApplePayPaymentRequest, include email in either requiredBillingContactFields or requiredShippingContactFields (depending on whether you need billing or shipping email):

const paymentRequest = {
  countryCode: 'US',
  currencyCode: 'USD',
  supportedNetworks: ['visa', 'masterCard'],
  merchantCapabilities: ['supports3DS'],
  // Ask for billing email (use requiredShippingContactFields for shipping email)
  requiredBillingContactFields: ['email'],
  lineItems: [
    { label: 'Subtotal', amount: '99.99' }
  ],
  total: { label: 'Total', amount: '99.99' }
};

Step 2: Access the email in the authorization callback #

Once the user completes the payment authorization, you can pull the email from the billingContact or shippingContact object in the onpaymentauthorized event:

const session = new ApplePaySession(3, paymentRequest);

session.onpaymentauthorized = (event) => {
  // Get the email from the relevant contact object
  const userEmail = event.payment.billingContact?.email;
  
  if (userEmail) {
    // Handle the retrieved email (e.g., save to your system, send receipts)
    console.log('User email:', userEmail);
  } else {
    // Handle case where user chose not to share their email
    console.log('User did not provide email');
  }

  // Complete the payment session
  session.completePayment(ApplePaySession.STATUS_SUCCESS);
};

// Initialize the session
session.begin();

Important notes:

• Users can opt out of sharing their email, so always add fallback logic for when userEmail is null.
• There are no "workarounds" or hidden methods to get the email without user consent—Apple’s privacy rules strictly enforce this.

内容的提问来源于stack exchange，提问作者NehaK