Glossary
WhatsApp opt-in
Opt-in: user permission to receive business messages, required especially for marketing.
Last updated: September 15, 2026
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WhatsApp opt-in is the user’s consent for a business to message them, aligned with Meta policies — critical before marketing template campaigns.
Click-to-WhatsApp or a user messaging first often starts the relationship; bulk outbound needs proof of permission. Quality rating punishes abuse.
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