There are several ways to add people on Telegram, even if they don't have the app. If they're a new user, you can add them to Telegram by sending an invite. Once someone's signed up for Telegram, you ...

Telegram has powerful but confusing granular controls for privacy and security.

Telegram is one of the popular cross-platform instant messaging and VoIP services out there. It is open-source and based on the freeware model. You can use it as an app on Android and iOS, on mobile, ...