Multi Product Dynamic Email Campaign Trigger using API

Hello there,

I am trying to implement one use-case for behavioral triggered email campaign in which data feed will come from website through an API and automatically dynamic content will go to each users. Let me elaborate my use-case:

Being a financial services company, we give pre-approved offers to customers, prospects who so ever comes to my offer page section. They need to put their mobile phone number, first name & last name and enter OTP to authorize themselves. Once, they authenticate, I can identify them that who's my existing customer or prospect one. This logic runs at my offer backend.