Before You Message,
Verify.
The WhatsApp Check Active API tells you whether a phone number has an active WhatsApp account — before you send a single message. Clean lists, lower bounce rates, and protect your sender reputation.
Why Verification Matters
Without Verification
- Messages bounce to inactive numbers
- Wasted API credits on dead contacts
- Sender reputation degrades over time
- Higher fraud risk from fake numbers
With Verification
- Only message confirmed active users
- Higher delivery and read rates
- Clean, actionable contact databases
- Early fraud signal detection
Use Cases
Onboarding
Verify phone numbers at sign-up to confirm real users.
Marketing
Clean contact lists before campaigns to maximize ROI.
Support
Confirm customers are reachable before sending notifications.
Fraud Prevention
Flag accounts using numbers without active WhatsApp profiles.
Data Hygiene
Periodically audit your database to remove stale contacts.