The Magento 2 OTP Login Extension does not restrict any payment or shipping methods. It works alongside all the usual methods you have set up in your Magento store. Customers can proceed with their chosen payment and shipping options just like they usually would after successfully logging in via OTP.

Read this guide on How to Configure Mobile OTP Login and Order SMS Notifications to Magento 2 to setup this extension to send promotional messages.

Here are the few more resource to help you get most out of this Magento 2 Mobile OTP Login and Order SMS Notifications Extension.

• How to Allow Login via Mobile Number OTP in Magento 2?
• How to Verify Customers Identity with Magento 2 Mobile OTP Login Extension
• What are SMS Order Notifications for eCommerce? What are it’s Benefits?
• How to Set New Order SMS Notification in Magento 2