Best Practices

Message Templates

• Keep templates concise, clear, and focused on customer-initiated contexts.
• Use personalization variables effectively to avoid looking like automated spam.
• Test templates before submitting for approval to prevent Meta account rejections.
• Avoid pure promotional and marketing language in transactional templates (e.g. OTP, order confirmations).

Compliance & Opt-Ins

• Always obtain explicit opt-in consent from users before sending WhatsApp notifications.
• Respect opt-out/unsubscribe requests immediately to maintain display number quality rating.
• Follow local privacy guidelines (such as GDPR or India DPDP Act) for collecting and managing phone contacts.
• Only message customers during appropriate daytime business hours in their local timezone.

Performance Optimization

• Batch or schedule heavy marketing campaigns to stay within platform API rate limits.
• Implement robust retry logic in your API integration with exponential backoff.
• Prefer outgoing Webhooks instead of polling endpoints to check delivery, read, and reply statuses in real-time.
• Regularly monitor error response rates to identify and filter out disconnected phone contacts.

Security

• Never expose developer API keys in frontend, client-side, or public repository code.
• Rotate API keys regularly from your dashboard to prevent unauthorized usage.
• Verify incoming Meta webhook signatures (X-Hub-Signature-256) in your receiver endpoint.
• Use secure HTTPS endpoints for outbound API calls and webhook callbacks.

Customer Experience

• Configure visual chatbot automations for instant replies to common billing or support queries.
• Provide clear menu-driven opt-out pathways inside the chat window.
• Leverage interactive reply buttons and lists to simplify customer responses.
• Always offer a pathway to transfer the chat to a live support agent when requested.