What features do you find most useful in Telegram?

There are several features in Telegram that I find most useful, including:

1. Large groups and channels: Telegram's support for large groups and channels is one of its most distinctive and useful features. The app allows users to create groups with up to 200,000 members and channels with an unlimited number of subscribers, making it a powerful tool for sharing updates, announcements, and other information with a large audience.
2. End-to-end encryption: Telegram's secret chats feature offers end-to-end encryption and self-destructing messages, which can be useful for sharing sensitive or confidential information.
3. Customization and personalization: Telegram offers a wide range of customization and personalization options, including custom themes, stickers, and keyboard shortcuts. These features can help users to tailor the app to their specific preferences and needs.
4. File sharing: Telegram's support for file sharing is another useful feature of the app. The app allows users to send and receive files of any type and size, making it a convenient tool for sharing documents, images, videos, and other content.
5. Cross-platform support: Telegram's support for multiple platforms, including mobile, web, and desktop, makes it a flexible and convenient messaging app. Users can access their chats and channels from any device, making it easy to stay connected and productive regardless of where they are.

Overall, I think the combination of large groups and channels, end-to-end encryption, customization and personalization, file sharing, and cross-platform support make Telegram a powerful and versatile messaging app that can meet a wide range of communication needs.