Broadcast channels answered a structural creator problem: feed reach is algorithmic and unreliable, but channel messages land in followers' inboxes. Creators use them for announcements, behind-the-scenes commentary, drops, and community polls — the intimacy of a group chat without the moderation chaos of one.
Followers join from a creator's profile or invite link; joining often notifies them of new messages by default, which is why open rates dwarf feed reach. The format sits between a newsletter (owned, direct) and a Story (casual, ephemeral). WhatsApp Channels scaled the model globally, and Telegram channels are the long-running precedent.
