Resources
Guides
How the WhatsApp Business Platform actually works, what it costs, and what European law requires before you message anyone. Written to be read once and referred back to, with the date of the last revision on every page.
What the WhatsApp Business API is, how it is priced, what you can and cannot send, how templates and the 24-hour window work, and what actually gets accounts restricted.
18 min read · updated 29 September 2026
GDPR and WhatsApp marketing
ComplianceThe two separate laws that govern WhatsApp marketing in the EU, what valid consent looks like, what you have to record, and where Meta sits in your data map.
14 min read · updated 11 August 2026
Collecting WhatsApp opt-in that holds up
ComplianceMeta's opt-in rules and the EU's consent rules are different tests, and you have to pass both. Where to collect it, what to say, and what to store.
11 min read · updated 11 August 2026
Reference data
- Per-message rates by country and category, with a volume calculator
- Every template rejection reason Meta returns, and what to change
- What transfers when you move providers, and what does not