6How to manage your Telegram channel? 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. With the administration mulling over limiting access to doxxing groups, a prominent Telegram doxxing group apparently went on a "revenge spree." 2How to set up a Telegram channel? (A step-by-step tutorial) To delete a channel with over 1,000 subscribers, you need to contact user support
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