Is not that hard, they have amazing documentation about it: https://core.telegram.org/bots. Source: 12 months ago

You can make authorization via Telegram another way. It works. But today we want to do the classic OAuth Authorization. Before you begin, you need to create a Telegram bot and obtain your bot token. You can do this in @BotFather in Telegram. For more information on initiating a bot, read the Telegram Bot API documentation: https://core.telegram.org/bots. - Source: dev.to / about 1 year ago

Creating a Telegram bot is fun: there's no website, no sign up, no forms — you just use a... bot. Yes, a bot that creates bots. It's called the BotFather 😂. - Source: dev.to / over 1 year ago

It's done via bots, which let you add clickable options to posts. Here's an FAQ on bots: https://core.telegram.org/bots. Source: almost 2 years ago

We'll create a class Bot, which will be the core of our program (that's unsurprising, considering we're writing the telegram bot). During its instantiation, it will read the token from your telegram bot (to learn how to register one go here) and build a basic bot app. Along with this, we're gonna add two async methods to our class, which will serve as message handlers (functions that are invoked when a specific... - Source: dev.to / almost 2 years ago

According to their April 1st committee finance report, they've been making a lot of payments to eztexting.com for their "mass texts to supporters expense" and eztexting claims to have a "SafeSTOP" compliance so you could try reporting SAN to them. Source: about 3 years ago