The one line that changes the price
Two messages that look almost identical are billed differently.
> "Invoice INV-2291 for ₹18,400 is due on 25 August. Pay here: [link]"
That is a utility message. It relates to an existing transaction, carries no promotion, and is free inside an open customer service window — charged only when sent outside one.
> "Invoice INV-2291 for ₹18,400 is due on 25 August. Pay by Friday and get 5% off your next order."
That is a marketing message. Marketing templates are always charged when sent, with no free window at all.
The reason this matters more than the rupee difference is who decides. Meta applies a category to the template at the time of use, and businesses accept the charge associated with that category. You do not get to label your own message. If a discount or an upsell rides along with the reminder, expect it to be priced as promotion.
| What you send | Category | Charged? |
|---|---|---|
| Invoice raised, amount and due date | Utility | Free inside an open window; charged outside it |
| Reminder before due date | Utility | Free inside an open window; charged outside it |
| Overdue notice, amount and reference only | Utility | Free inside an open window; charged outside it |
| Payment received, receipt | Utility | Free inside an open window; charged outside it |
| Reminder plus early-payment discount | Marketing | Always charged |
| Reminder plus offer on next purchase | Marketing | Always charged |
| Settlement or waiver offer | Marketing | Always charged |
| OTP to authorise a payment | Authentication | Free inside an open window; charged outside it |
| Agent answering "can I pay in two parts?" | Service (non-template) | Free, and only sendable inside an open window |
| Customer's reply | — | Never charged |
The practical rule for a collections team: keep the money message clean. Amount, reference, due date, method. Put incentives in a separate, deliberate marketing send if you want them, and price them as such.
