Easy integration
REST APIs and SDK-ready examples
Modern messaging API
WhatsApp OTP and customer messages for modern web apps.
Reliable, developer-friendly APIs for OTP, notifications, and opt-in customer messaging at scale.
No card required20 free test creditsCancel anytime
Workspace overview?
Total requests
24.8K
+8.6%
Delivered
23.7K
+12.1%
Failed
312
-2.4%
Success rate
95.2%
+1.8%
Requests (last 7 days)Live
MonTueWedThuFriSatSun
Top channels
WhatsApp18.2K
OTP4.8K
API1.3K
Webhooks0.5K
cURLOTP request
curl -X POST https://api.hookmessage.com/api/otp/send \
-H "x-api-key: YOUR_API_KEY" \
-H "content-type: application/json" \
-d '{
"receiver_number": "212612345678",
"app_name": "My product",
"ttl_minutes": 10
}'Built for product teamsSaaSE-commerceAgenciesSupportPlatforms
Powerful for every team
Developers
Clear APIs, practical docs, and fast integration paths.
Support teams
Reach customers quickly with observable delivery.
Product teams
Build OTP and event notifications into core flows.
Marketing teams
Trigger relevant, opt-in customer messages.
E-commerce
Confirm orders, payments, delivery, and account events.
Growing businesses
Scale messaging with team controls and support.
How it works
- 1Create account
Start with a sandbox workspace.
- 2Create API key
Choose OTP or message access.
- 3Send request
Call one secure REST endpoint.
- 4Track delivery
Follow status and failure details.
- 5Scale safely
Upgrade capacity when needed.
Developer first
Send OTP with one API request.
- Server-generated OTP codes
- Purpose-scoped API keys
- Delivery status tracking
- Automatic retry handling
- Workspace isolation
cURLsecure request
curl -X POST https://api.hookmessage.com/api/otp/send \
-H "x-api-key: YOUR_API_KEY" \
-H "content-type: application/json" \
-d '{
"receiver_number": "212612345678",
"app_name": "My product",
"ttl_minutes": 10
}'Everything you need to scale
OTP + messages
Purpose-scoped client roles
Global numbers
International phone formatting
Live analytics
Delivery and usage visibility
Secure controls
Workspace-scoped credentials
Automatic retries
Safer transient-failure handling
API key rotation
Controlled credential lifecycle
Integration help
Guidance when your team needs it
Simple, transparent pricing
Start in the sandbox, then pay for the capacity your product needs.
Free Sandbox
$0/ month
Test the API safely before sending production traffic.
- 20 test credits
- HookMessage-managed test numbers
- No card required
- No image or document attachments
Pay as you go
$0.006/ extra credit
Start production sending without committing to a monthly plan.
- 100 credits / month
- 1 connected number
- 100 image or document attachments
- 500 MB private storage
Pro
Popular$19/ month
Scale active products with connected numbers, richer tooling, and more media capacity.
- 6,000 credits / month
- Up to 5 connected numbers
- 1,000 image or document attachments
- 5 GB private storage
Business
Built for higher-volume operations.
$49/ month
Premium support, advanced controls, and room for larger teams.
- 25,000 credits / month
- Up to 15 connected numbers
- Priority onboarding
- Advanced analytics
- Team access
- Integration help
- 5,000 image or document attachments
- 25 GB private storage
- 10 MB files kept for 365 days
Start with the sandbox
Build your first messaging flow today.
Test the API without a card, then move to production when you are ready.