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- Telegram

The company also makes its API publicly available for free and invites developers to create clients on other platforms. Users can also create custom bots, themes, stickers, and more free of charge. Once you have added your theme, you will see a new paint button has appeared at the top. Tap on it and then you will see the names of different elements that you can edit. The encryption is based on 2048-bit RSA encryption, 256-bit symmetric AES encryption, and Diffie–Hellman secure key exchange.

I have been using Telegram for a long time. It’s straightforward, and most Telegram features save time and make my day-to-day life so much easier. Scheduled and Silent messages 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. Improved External Sharing on iOS

Edit Sent Messages Telegram has an upload limit of 2 GB per single file. It was one of the most valuable Telegram features I mostly loved. Set Telegram Pass code in Telegram features Sent a picture without adding your usual filter or marking the text you wanted to highlight? Sent the wrong picture altogether? Telegram can help you out. The app allows users to edit photos and even replace them after you have sent it.

Telegram API: lets you create your own customized Telegram clients. You can read Telegram’s open-source code to know how the platform works. Send Scheduled and Silent Messages