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WhatsApp Invoicing: How to Send GST Invoices Clients Actually Open

Email open rates hover around 20%; WhatsApp is above 90%. Use it properly without spamming clients.

31 March 2026 4 min readBy SmartGST Team
WhatsApp Invoicing: How to Send GST Invoices Clients Actually Open

Send a PDF, not a screenshot

Screenshots are not valid documents and cannot be forwarded to accountants. Always send the PDF or a secure link.

Keep the message short

Name, invoice number, amount, due date, link. Nothing else.

Use the public link

A link lets the client view, download and pay — and you can see when it was viewed.

Respect timing

Send during business hours and avoid multiple reminders on the same day.

One-tap in SmartGST

The WhatsApp button on any invoice opens a pre-filled message with the PDF link; on mobile it shares the PDF file directly.

Try it on your next invoice

SmartGST Invoices automates GST calculation, HSN codes, reminders and GSTR reports. Free to start.

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Keywords: whatsapp invoice · send invoice on whatsapp. This article is general information, not professional tax advice.