Secure OTP & Transaction Delivery with Sendflow | Zixflow
AI-routed Messages
Every Notification Delivered. Automatically.
Send OTPs and transactional notifications instantly across multiple channels with intelligent routing that ensures reliable delivery, even during high traffic.
Trusted by 1,000+ companies around the world
Months of Engineering, Solved in Minutes
Stop building lengthy messaging flow. Start delivering in minutes.
Building Infrastructure
Planning & Architecture
- Requirement gathering
- Channel selection (Email, SMS, Push, WhatsApp)
- System architecture design
- Event structure planning
Channels Integrations
- Email provider integration
- SMS gateway setup
- Push notification setup
- Authentication & API setup
Template System
- Template engine setup
- Dynamic variables support
- Template versioning
- Multi-language support
Business Logic Layer
- Notification triggers
- Conditional routing logic
- User segmentation rules
- Scheduling system
Queue & Delivery System
- Message queue setup
- Retry logic
- Rate limiting
- Priority handling
User Preferences
- Opt-in / opt-out system
- Channel preferences
- Frequency control
- Compliance handling
Fallback & Reliability
- Channel fallback logic
- Failure handling
- Dead-letter queues
- Monitoring alerts
Analytics & Tracking
- Delivery tracking
- Open/click tracking
- Event logs
- Reporting dashboard
Scaling Infrastructure
- Load balancing
- Worker scaling
- Performance optimization
- Cost optimization
One API for Every Channel. Zero Infrastructure Headaches.
Connect your application to Sendflow once. Route, retry, and deliver messages across any channel automatically.
Step 1
Trigger via API
Initiate OTP verification or notifications across channels with a single API. No manual routing or guesswork needed.
Step 2
Smart Routing
Sendflow picks the optimal vendor and operator in real time — AI-decided, based on live deliverability.
Step 3
Auto Retry & Fallback
If SMS fails, WhatsApp kicks in. If that fails, Email takes over. Zero messages dropped, zero code written.
Step 4
Track & Analyse
Monitor delivery, open rates, and conversions in real-time. No separate analytics tools needed.
Everything you need to ship
Sendflow gives your team the complete notification infrastructure — so you ship features, not plumbing.
Multi-Channel Delivery
Reach users on SMS, WhatsApp, Email, and RCS — all from one API call.
Automation
Visual Flow Builder
Drag-and-drop logic to build notification journeys without writing a line of code.
- Trigger: User Signup
- Send Welcome Email
- Delay — 8 Hours
Reliability
Auto Retry & Fallback Logic
If the primary channel fails, the next kicks in automatically. Zero messages dropped, zero code written.
- 99.9% Delivery rate
- <8s Avg delivery
Observability
Real-time Analytics
Monitor delivery, open rates, and conversions live.
- Delivered: 94%
- Opened: 68%
- Clicked: 42%
- Converted: 27%
- 2.4M Sent today
Scheduling
Timezone & Country Awareness
Deliver notifications at the right local time for every user — automatically adjusted by country and timezone.
Case Studies
Zixflow powers our eCommerce with multichannel automation, boosting engagement & sales!
“Achieved a 98% OTP delivery success rate, enhancing user authentication and engagement.”
“We blindly trust Zixflow to send millions of messages to all our customers on different channels, daily. Super reliable.” 🎉
Development
Enterprise-ready APIs to Build Custom Experiences
For teams that need direct programmatic access, Zixflow offers comprehensive APIs that power messaging infrastructure for thousands of companies worldwide.
| 1 | curl --request POST \ |
| 2 | --url https://api-ai.zixflow.com/api/ingest/sendflow/v1/XM6uY/trigger?version=draft \ |
| 3 | --header 'x-api-key: YOUR_API_KEY' \ |
| 4 | --header 'x-workspace-id: 68be4f797a6494676161e98b' \ |
| 5 | --header 'Content-Type: application/json' \ |
| 6 | --data '{ \ |
| 7 | "variables": {}, \ |
| 8 | "recipients": { \ |
| 9 | "phone": "+919876543210", \ |
| 10 | "email": "john@example.com" \ |
| 11 | } \ |
| 12 | }' |
Frequently Asked Questions
Here are the answers to common questions about Sendflow. If your question isn't listed, please reach out to our team!