Developing social channels based on exchanging a single message isn’t exactly new, of course. Back in 2014, the “Yo” app was launched with the sole purpose of enabling users to send each other the greeting “Yo.” End-to-end encryption is an important feature in messaging, as it's the first step in protecting users from surveillance. Telegram Channels requirements & features best-secure-messaging-apps-shutterstock-1892950018.jpg 5Telegram Channel avatar size/dimensions
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