Telegram announced on Tuesday that it now has more than 100 million monthly active users, with more than 15 billion messages being sent through the service every day. That might not seem as impressive as WhatsApp passing the 1 billion users mark earlier this month, but keep in mind that Telegram is less than three years old. The service has been growing at a rapid pace thanks to its dedication to privacy and security, and it’s always being updated with new features to ensure that it can hold its own against the likes of Facebook Messenger and WhatsApp.