Opt-in Best Practices: Growing a WhatsApp Audience That Wants to Hear From You
Consent isn't a compliance chore — it's the reason WhatsApp outperforms every other channel. How to collect, record, and honor opt-ins properly.
Team Wanity
Compliance · Wanity.ai
WhatsApp's biggest advantage — messages people actually read — exists precisely because the platform protects users from spam. Businesses that treat opt-in seriously get rewarded with deliverability and quality ratings; businesses that don't get rate-limited or banned.
What counts as a valid opt-in
An opt-in must be an active choice: a checkbox that isn't pre-ticked, a keyword sent to your number, a click-to-WhatsApp ad, or an explicit ask during checkout. It should name the business and indicate the kinds of messages the customer will receive.
Buying contact lists, scraping numbers, or importing someone else's database is not consent — and it's the fastest route to a banned number.
Record everything
Store the source, timestamp, and scope of every opt-in. India's DPDP Act and the GDPR both expect you to demonstrate consent on request — and Meta may ask during quality reviews. Wanity records this automatically on every contact.
Honor the exit
Every STOP, unsubscribe keyword, or block must be enforced across all campaigns immediately. Automatic opt-out handling isn't just polite — low block rates are the single biggest input to your number's quality rating.
