Telegram Login Widget for external websites is here. When you use Telegram login for the first time, the widget asks for your phone number and sends you a confirmation message via Telegram to authorize your browser. Once this is done, you get a two-click login on every website that supports signing in with Telegram.
The best way to talk directly to your customers in your product (web, iOS and Android) and on your website.
Integram is a set of rich integrations for Telegram