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Issue — June 21st, 2026 70% WhatsApp open rates vs 18% for email 90%+ WhatsApp penetration among Indonesian internet users 4-5x Monthly promo sends before opt-outs spike (Meta data) 🎯 The Broadcast Trap Somewhere in 2023, a senior marketer at a major regional bank looked at their WhatsApp Business open rates — 60%, 70%, sometimes higher — and made a decision that felt obvious: move the promotional calendar there. Why wouldn't you? Email was running at 18% open rates on a goo