Blog
Notes on selling over WhatsApp.
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How to get WhatsApp Business API access (and what Meta checks)
The two routes to the WhatsApp Business API, what you need before you apply, what it costs, and the mistakes that get applications stuck. Every fact linked to Meta's own documentation.
20 August 2026
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WhatsApp Business app or the API — which do you need?
The free app is enough for a lot of businesses. Here is where it stops, what the API gives you instead, and what happens to your existing number if you move.
18 August 2026
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What counts as opt-in on WhatsApp
Meta requires opt-in before you message anyone on WhatsApp. Here is what a valid opt-in must say, where you can collect it, and what it costs you to get this wrong.
18 August 2026
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WhatsApp now charges per message, not per conversation
Meta retired conversation-based billing on 1 July 2025. Here is what you actually pay for now, what is still free, and the three things that change your bill.
18 August 2026
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Why WhatsApp rejected your message template
Template rejections usually come down to a handful of causes, and most are formatting rather than policy. Here is the full list, and how to fix and resubmit.
18 August 2026