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. Users are more open to new information on workdays rather than weekends. Don’t publish new content at nighttime. Since not all users disable notifications for the night, you risk inadvertently disturbing them. Add up to 50 administrators Public channels are public to the internet, regardless of whether or not they are subscribed. A public channel is displayed in search results and has a short address (link).
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