There are a few ways to add mass in Telegram:
1. You can create a channel and add as many people as you want to it. This is a great way to reach out to a large number of people at once.
2. You can also create a group chat and invite as many people as you want to it. This is also a great way to communicate with a large number of people at once.
3. You can also send messages to individuals or groups of people that you know well enough.