I am trying to build a web application which essentially traces all my subscriptions in my gmail account, something very similar to here. But I have no clue how to get started with the development process. Could someone suggest what tools / technology stack I need to be familiar to be able to implement something like this.
One possible case that I could think of was google app script but I want this more like a web app that I can share with people.
Thanks for the help in advance.
Vaibhav