Shopify: How to Allow Customers to Checkout using either Phone or Email Address

You now have the ability to reach your customers through their preferred notification method, eg, email or SMS (mobile phone): 

• You can allow your customers to checkout using either their phone number or email address.
• Customers can receive order updates by SMS after checking out with a phone number or by opting into SMS notifications on the Thank You Page or Order Status page
• You can edit the templates for SMS notifications

Find out more about these changes and how to apply them here.