Invite up to 200 users from your contacts to join your channel 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 “Invite.” You can skip this step altogether. 3How to create a 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. To edit your name or bio, click the Menu icon and select “Manage Channel.”
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