Bot API: lets you build programs that use Telegram messages for an interface. You don’t need to have knowledge of MTProto encryption protocol. The intermediary server will handle all communication and encryption with Telegram API for you. Turn Off Notifications for Individual Contacts While all Telegram chats are client-server encrypted, default chats are still stored on Telegram's servers. This conveniently allows you to access your messages on multiple devices, but it might raise privacy concerns.
However, with new Telegram updates, they provide two-step verification for your telegram account. That means if you want to login to telegram on another device, it’s required your two-step password to log in. You can also set up it from the Privacy and Security list as I mentioned above. Global message deletion Self Destruct Messages on Secret Chats Keep Alive
This kind of feature can make conversations more orderly while increasing the value of each individual message. You can enable this option from the “Group Permission” section. Keep it on forever, or toggle as necessary to throttle rush hour traffic. Telegram Location Share Chat Folders The aforementioned secret chats are where you can take part in end-to-end encrypted messaging with a contact. But that’s not its only benefit: Secret chats also don’t allow a person forward messages from there or take screenshots. Of course, someone could take a picture of the screen with another device, but it’s still discouraged, and it’s bolstered by another feature: self-destruct timers.
One of the worst parts about messaging apps is that anyone can add you to random groups without your active permission. However, the good part is that Telegram gives you an option to disable it altogether. You can change the desired settings from Settings menu -> Privacy and Security -> Groups -> My Contacts and then select all the Telegram users to “Never Allow”. I can’t tell you how much I love this Telegram trick. Read: 7 Best Facebook Alternatives That Keep Your Data Private | 2020 Edition
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