Invite up to 200 users from your contacts to join your channel Telegram iOS app: In the “Chats” tab, click the new message icon in the right upper corner. Select “New Channel.” How to Create a Private or Public Channel on Telegram? 5Telegram Channel avatar size/dimensions Your posting frequency depends on the topic of your channel. If you have a news channel, it’s OK to publish new content every day (or even every hour). For other industries, stick with 2-3 large posts a week.
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