The optimal dimension of the avatar on Telegram is 512px by 512px, and it’s recommended to use PNG format to deliver an unpixelated avatar. End-to-end encryption is an important feature in messaging, as it's the first step in protecting users from surveillance. A new window will come up. Enter your channel name and bio. (See the character limits above.) Click “Create.” Invite up to 200 users from your contacts to join your channel How to create a business channel on Telegram? (Tutorial)
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