Do I need the WhatsApp Business API?
Only if you want to send automated messages from your system. A click-to-chat link needs no API and covers most enquiry use cases.
INTEGRATION · WHATSAPP · BUSINESS API · NOTIFICATIONS
AVAILABLE FOR WORKFreelance · Contract · Full-time
WhatsApp integration for apps and websites.
WhatsApp where it actually helps — a chat button that opens the right conversation, order and booking updates through the Business API, and OTP delivery that reaches people who never check email.
Click-to-chat · Cloud API · Templates · OTP · Support handoff
01 · START SIMPLE
Click-to-chat is often enough
A WhatsApp button with a prefilled message converts well for service businesses and costs nothing to maintain. The important details are the correct number format, a prefilled context message and a fallback for users without WhatsApp installed.
For many small businesses that single link outperforms a contact form.
02 · BUSINESS API
When to move to the Cloud API
The Business API sends template messages for order confirmations, booking reminders, payment links and delivery updates, with delivery status callbacks. It requires a verified business, approved templates and attention to the 24-hour customer service window.
Used properly it reduces support load. Used as a broadcast channel it gets numbers restricted.
03 · OTP
WhatsApp as a login channel
For Indian users, WhatsApp OTP often arrives faster and cheaper than SMS, and it avoids DLT template friction. The flow still needs expiry, retry limits and a fallback channel.
Authentication templates and rate limiting are part of the build, not optional extras.
04 · SUPPORT
Handing conversations to a human
Automated replies handle the first question, but someone has to take over when the message gets specific. A simple inbox or CRM handoff, with conversation history and assignment, prevents leads from disappearing into an unread queue.
I can wire the API into your existing CRM or build a lightweight inbox.
WHAT'S INCLUDED
WhatsApp where it fits the flow
- ✓Click-to-chat
Correct deep links, prefilled messages and desktop fallbacks. - ✓Cloud API setup
Business verification, phone number and webhook configuration. - ✓Templates
Approved message templates for orders, bookings and reminders. - ✓OTP delivery
Authentication templates with expiry and rate limits. - ✓Payment links
Collect payments through a WhatsApp message. - ✓Delivery status
Sent, delivered, read and failed callbacks. - ✓Support handoff
Automated first reply with human takeover and assignment. - ✓CRM sync
Conversations and leads written to your CRM or backend.
SELECTED EXPERIENCE
Real products, practical engineering.
Explore examples of mobile, Smart TV and integrated product work.
COMMON QUESTIONS
Working together
Can WhatsApp replace SMS OTP?
Often, yes, with a fallback. WhatsApp OTP can be faster and cheaper in India, but coverage is not universal and rate limits apply.
Is WhatsApp messaging compliant for marketing?
Only with opted-in users and approved templates. Unsolicited bulk messaging risks number restrictions. Transactional and support messages are the safer use.