Notification & Communication Systems
WhatsApp, SMS and email notifications that reach every customer
We build notification systems on the WhatsApp Business API, SMS and email: OTPs, order updates, reminders and alerts triggered by your app, delivered in seconds, with fallback when a channel fails and a log for every message.
- WhatsApp Business API
- Bulk SMS and OTP
- Automatic fallback
- Queue-backed on AWS
Your Store
WhatsApp Business account
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Login code
Your login code is 482 913. It expires in 5 minutes. Never share it with anyone.
9:41 AM
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Order confirmed
Hi Neha, order #58213 is confirmed. We will message you the moment it ships.
9:44 AM
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Shipped
Good news: your order is on its way and arrives Thursday. Track it anytime from your account.
2:10 PM
Delivery log: order #58213
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WhatsApp Read
Shipped update sent 2 seconds after dispatch.
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SMS Skipped
Held as fallback, not needed.
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Email Delivered
Invoice PDF attached and delivered.
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Your app Synced
Delivery status pushed back by webhook.
The right channel, every time
WhatsApp first where customers read it, SMS as a fallback for OTPs and critical alerts, and email for invoices and documents.
Built for volume
Queue-backed delivery on AWS SNS and SQS absorbs spikes, from a flash sale to month-end reminders, without dropping messages.
Nothing sent blind
Delivery and read status recorded for every message, failures retried or rerouted automatically, and a log you can search.
Everything your notification system needs
Transactional messages, reminders and campaigns, built into your application rather than bolted on.
WhatsApp Business API
- Approved message templates
- Two-way conversations
- Buttons, images and documents
- Opt-in and preference management
SMS
- OTP and verification codes
- Transactional alerts
- Bulk SMS campaigns
- DLT-compliant templates for India
- Transactional email
- Invoices and PDFs attached
- Domain authentication for inbox delivery
- Branded templates
Triggers and rules
- Sent automatically from events in your app
- Schedules and reminders
- Quiet hours and frequency limits
- Each customer's channel preference respected
Reliability
- Queue-backed delivery on AWS SNS/SQS
- Automatic retries
- Fallback to another channel
- Rate limiting to protect sender reputation
Tracking
- Delivery, read and click reports
- A searchable log of every message
- Webhooks back to your app
- Cost tracking per channel
AI add-ons
AI add-ons for smarter notifications
Optional, and added only where they earn their place.
Replies understood automatically
Customers reply "reschedule" or "cancel" on WhatsApp and the system acts on it, instead of a person reading every reply.
AI voice reminders
Critical reminders, such as a payment due or an appointment tomorrow, delivered as a natural voice call when a message is not enough.
Personalised message copy
Message variants written for each customer segment and language, within your approved templates.
Best time and channel
Each customer reached when and where they usually respond, lifting read rates and cutting costs.
Urgent replies escalated
Angry or urgent replies flagged and routed to a person straight away, not lost in a busy inbox.
Campaign summaries
Delivery, reads and replies summarised in plain English after every campaign.
Notifications by industry
The messages that keep customers informed and businesses paid.
E-commerce and retail
Every step of the order, on the customer's phone.
- Order and shipping updates
- Cash-on-delivery confirmation
- Back-in-stock alerts
Banking and fintech
Fast, secure and on the record.
- OTP and login codes
- Transaction alerts
- Payment reminders
Healthcare
Fewer missed appointments.
- Appointment reminders
- Report-ready alerts
- Follow-up nudges
Education
Parents and students always in the loop.
- Fee reminders
- Attendance alerts
- Results and circulars
Logistics
Customers who know where their parcel is do not call.
- Dispatch and ETA updates
- Delivery confirmation
- Failed-delivery rescheduling
SaaS and apps
Messages that bring users back.
- Sign-up verification
- Usage and billing alerts
- Weekly digests
How we set it up
Including the account approvals most teams get stuck on.
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Plan
Which messages, on which channel, triggered by what.
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Accounts and approvals
WhatsApp Business verification, templates and SMS DLT registration.
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Integrate
Connected to events in your app, with queues and fallback.
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Test at volume
Load-tested so launch day is not the first real test.
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Launch and monitor
Delivery tracked and failures alerted from day one.
Messages your customers actually receive
Notifications seem simple until you need to send thousands of them reliably, on time, across several channels, without your infrastructure falling over. That is an engineering problem, and one we have solved repeatedly in production.
We build notification systems on the WhatsApp Business API, SMS and email: OTP and verification flows, order and payment updates, reminders, and bulk alerts for time-sensitive announcements, triggered straight from events in your application and delivered through queues on AWS SNS and SQS.
Every message is tracked from send to delivery and read. When a channel fails, the message is retried or falls back to another one, so an OTP still arrives when WhatsApp is slow. It plugs into your online store, billing system or helpdesk.
Common questions
- What is the WhatsApp Business API?
- It is Meta's official API that lets a business send WhatsApp notifications and hold conversations at scale from its own systems, using pre-approved message templates. Unlike the WhatsApp Business app, it connects directly to your software.
- Do you help set up the WhatsApp Business API account?
- Yes. We guide you through Meta business verification and template approval, then connect the account to your application, so messages go out automatically from your systems.
- How does WhatsApp API pricing work?
- Meta charges per message based on its category (marketing, utility or authentication) and the recipient's country. We design flows to keep costs down, for example using utility templates for order updates and SMS only as a fallback.
- Can you send bulk SMS?
- Yes. We build bulk SMS and OTP flows on the SMS gateway of your choice, with DLT-registered templates as required in India, delivery reports and retries.
- What happens if a message fails?
- It is retried automatically, and if the channel is still unavailable the message falls back to another one, for example from WhatsApp to SMS. Every attempt is logged.
- Can this plug into our existing app?
- Yes. Your application sends an event or calls an API, and the notification system handles templates, channels, retries and tracking, with status sent back to your app by webhook.
Stop losing customers to messages that never arrive
Tell us what you need to send and to how many people. A senior engineer will reply within one business day with the right channels and setup.
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