How to send an invoice PDF by Zalo

Export a clear PDF, give it a useful filename and send it to the correct customer.

Last updated: 25/09/2026

1. 1

   PDF is useful because its layout changes less between phones and computers. Open the file once before sending to ensure it has no blank page or missing total.

2. 2

   Name the file with date, invoice number and customer, such as 2026-10-09-INV001-Nguyen-Van-A.pdf. This is easier to find than document.pdf.

3. 3

   Open the customer's correct Zalo conversation and send the file as a document instead of a screenshot. The text stays sharp and the customer can save it.

4. 4

   Include a short message with the invoice number, total and sale date. Record that it was sent so you can resend the same file without creating a duplicate invoice.

5. 5

   A PrintInvoice sales PDF is not a tax-authority-coded e-invoice. When a transaction requires one, use a licensed e-invoice provider.