Send the bill on WhatsApp. Keep the customer.
A thermal receipt costs you paper and gets thrown away at the door. A WhatsApp bill costs nothing, is never lost, and leaves you with a phone number you are allowed to use again.
The useful part
What syncs
| PDF bill on WhatsApp | Sent the moment the bill is finalised |
|---|---|
| Opt-in customer database | Built automatically as you bill, with consent recorded |
| Festival and offer campaigns | Approved templates to your own customer list |
| Re-order and refill nudges | For pharmacies, grocery and salons on a predictable cycle |
| Payment reminders | Udhaar statements and due reminders that do not need a phone call |
| Paper saved | Most counters cut thermal roll consumption by half |
What does not sync
| Bulk cold marketing | Not supported and not advisable — only opt-in customers |
|---|---|
| Unapproved templates | Meta must approve message templates first |
| Chat support inbox | Available as an add-on, not part of core billing |
We publish this list because you will find it out anyway — better now than after you pay.
Setup
Getting it working
- 1
Register a WhatsApp Business number and get it verified
- 2
We connect it to your POS through the WhatsApp Business API
- 3
Get your bill and reminder templates approved
- 4
Enable consent capture at the counter
- 5
Start with bills, add campaigns once the list has grown
Answers
Frequently asked questions
A tax invoice is valid on its content, not its delivery. Many shops send the PDF and print only when the customer asks. Keep your GST records as usual.
A WhatsApp Business API number cannot also be used in the normal WhatsApp app, so most shops dedicate a second number to billing.
Meta charges per conversation and rates change; we pass them through at cost and show you the estimate before you start.
No — and you should not. Only customers who opted in at your counter. That list converts far better anyway.
Yes, your normal shop number keeps working for calls; only the billing number moves to the API.
All third-party product names, logos and brands are trademarks of their respective owners and are used here descriptively only. Aero Pack POS is not affiliated with, endorsed by or sponsored by any of them. Compatibility and comparison claims are based on publicly available information and our own engineers' testing as of August 2026 — please verify with your software provider before purchase.
See this integration running, live
An engineer visits with a machine, loads your items and bills a live transaction. Thirty minutes, free, no obligation.