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According to the official Telegram FAQ section, You can create secret chats that use end-to-end encryption. This means only you and your chat partner can read those messages. If you are a group admin and it’s getting hard for you to manage the group due to the sheer amount of messages, you can use utilize the slow mode feature. The platform supports two types of channels: public and private. The former can be found in search, and anyone can join them, whereas the latter can be joined only via invitation links.

This feature allows you to filter out and put personal chats, channels, groups, contacts in different and customized folders. You can customize folders the way you want, plus there are some additional features. For example, you can have all chats with unread messages automatically added to a folder. Telegram Saved Messages Slow Mode Automatic Saving to Gallery on Android

To use it, go back to Settings > Chat Settings (Android) or Settings > Appearance (iOS). Select Auto-Night Mode to choose how it works. Scheduled: Night mode will start when the sun goes down and turn off when the sun rises again. If you like, you can instead set your own times for it to turn off and on. Telegram offers a few other handy options in chats. You can delete any message by long-pressing it, then hitting the Trash icon that appears. The app lets you delete messages at any time—even messages that the other person sent in a chat. Telegram Bots

Telegram allows you to manage the device storage: you can choose to delete media (photos, videos, and other files) shared on the app. All files will be deleted from your device after the specified duration, but they will stay in the Telegram cloud forever, so you can re-download them when you need them again. There is also an option to delete the cache and local database. In fact, Telegram supports verifiable builds that allow outside developers to check whether the code published on GitHub is the exact same code that is used to create the app, which you have downloaded from Google Play or App Store.