Opt-in

Explicit customer consent to receive messages. Required by data protection laws.

Opt-in is the explicit customer consent to receive messages. Required by data protection laws (GDPR, LGPD) and WhatsApp's own policy. No opt-in = illegal spam.

How to get legitimate opt-in

Explicit checkbox: "I agree to receive WhatsApp communications".
Customer-initiated message asking for info.
Order confirmation with WhatsApp tracking.

Documentation

Keep record: date, IP, form, exact consent text. Required by GDPR/LGPD.

See: opt-out.