2 Factor Authentication, OTP and SMS Notifications

2-factor authentication can be done both  on SMS and email,

It can be performed on customer registration and checkout both.

Also, on order delivery and order creation an SMS can be sent automatically.

Custom SMS to multiple customers in a single attempt send by admin.
Please 
Download user guide from here.

• It Supports all SMS providers with  HTTP/GET method API.
• Edit message contents using message templates, for all outgoing messages and automated notifications.
• For user registration- Perform Authentication over SMS and/or email.
• For checkout-Perform Authentication over SMS and/or email.
• Only for COD orders-authentication, can be performed for chosen payment methods; like you can do authentication.
• On order creation send automatic SMS notification.
• On order delivery send automatic SMS notification.
• From customer grid send custom SMS to multiple customers in Opencart Admin.
• It Supports one-page checkout added advantage.
• It Supports Journal theme quick checkout added advantage.

Supports all SMS providers. Using this extension, SMS can be sent automatically on order creation, order delivery.
Admin can also send bulk SMS to multiple customers.

Important:

• Please note we do not provide any SMS credit. You need to buy SMS credits separately.
• Please note the extension uses HTTP API for sending the SMS. This method is supported by most of the SMS APIs available in the market. You should confirm this with your SMS provider, before purchasing this extension.