WhatsApp messaging, built into the software you already use
Naduvan Technologies lets businesses that use PosyGen, DocyGen and VishGen connect their own WhatsApp Business number. They can then send bills, prescriptions, order updates and reminders, and reply to customers, without leaving the app. The service runs on Meta's official WhatsApp Business Platform.
One connection, used across our products
Messages are always sent by the business, from its own name and number, to its own customers.
Bills & receipts
PosyGen sends the customer a digital invoice at checkout, plus order and delivery updates.
Prescriptions
DocyGen sends the signed prescription PDF to the patient right after the visit.
Reminders
Appointment, renewal and payment reminders for customers who asked to receive them.
Customer support
Customer replies arrive in a shared inbox inside the app, so staff can answer them.
Connected in a few minutes, using Meta's own signup
Open WhatsApp settings
In PosyGen, DocyGen or a VishGen-built app, the business owner chooses Connect WhatsApp.
Sign in with Meta
Meta's secure signup window opens. The owner logs in to Facebook and picks or creates their WhatsApp Business account. We never see their password.
Verify the number
The owner adds their business phone number, verifies it with a code from Meta, and approves the permissions our app asks for.
Start messaging
The number is linked. The business picks which messages to send and manages its message templates in the app.
What we access, and what we don't
We use WhatsApp data only to provide this messaging service to the business that connected it. For details, see our Privacy Policy.
What we access, with the business's permission
- The business's WhatsApp Business account, phone number and display name
- Message templates the business creates
- Messages the business sends and receives, and their delivery status
- Customer phone numbers and profile names, so the conversations can be shown
What we never do
- Sell or rent WhatsApp data, or share it for advertising
- Use one business's data for another business
- Message people on our own behalf using a business's number
- Keep access after the business disconnects
Rules every connected business follows
Opt-in first
Businesses send updates and reminders only to customers who gave their number and agreed to hear from them on WhatsApp.
Approved templates
Messages that start a conversation use templates that Meta has reviewed and approved.
Easy to stop
Customers can reply STOP or block the business at any time, and we honour it.
Every business must follow the WhatsApp Business Messaging Policy and our Terms of Service.
Want WhatsApp in your business software?
Use one of our products, or ask us to connect your existing system to WhatsApp.