The optimal dimension of the avatar on Telegram is 512px by 512px, and itโs recommended to use PNG format to deliver an unpixelated avatar. Write your hashtags in the language of your target audience. You can invite up to 200 people from your contacts to join your channel as the next step. Select the users you want to add and click โInvite.โ You can skip this step altogether. 1What is Telegram Channels? Polls
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