Using warranty and service dates to bring customers back

A warranty card in a drawer helps nobody. A reminder at the right time helps the customer and brings them to your shop.

What to record at the sale

The customer name and a WhatsApp number they agree to be contacted on.
The product, model and bill number.
The date of sale and the length of the warranty.
How often a service is advised, if any.

Write it in the warranty register at once; it takes one minute, and the dates work themselves out.

Two reminders worth sending

Hello [name], it is time for the routine service of your [product]. A service keeps it running well and your warranty clear. Please tell us a convenient day and we will arrange it.

Hello [name], the warranty of your [product] ends on [date]. If you have any problem, please tell us before that date so that we can help.

Why the second one matters

A customer who finds a fault after the warranty ends feels cheated, and a customer who was warned feels cared for. Often the warning brings a fault report that you can fix cheaply and that earns goodwill.

Keep within the customer's wishes

Use the number for the product only, stop if the customer asks, and never add them to a broadcast list without asking.

Rules

What a warranty must cover, and what the law says about it, differs by country and product. Give only the warranty you can honour, write its terms clearly and check local consumer rules.

Common questions

How far ahead should I remind about a service?

A week before is enough for a call and a booking. For seasonal products such as air conditioners, remind a month before the season.

What if I forgot to record the sale?

Add the customer when they next come, using the bill date. Old bills with a date are enough.

Keep going

The registers keep their data in your own browser and send nothing to us. Names, numbers and prices in the examples are made up. No law, tax, consumer or guest-registration rule is stated here: check local rules where they matter. Checked 14 November 2026.