Showing an estimated delivery date on the product page removes a doubt for the buyer. It’s also a promise your store has to keep. This post is the other half of that decision: which catalogues will have it backfire, which won’t, and how to switch it on only where you trust it.
What you’re actually promising
A date on the product page doesn’t say “this usually takes about this long”. To whoever reads it, it says “I’ll have it that day”. That’s not a nuance: it shows up in the email your customer sends the day after that date.
And that promise rests on three things you don’t always control: that stock is real, that the carrier delivers, and that the order ships when you say it ships. If any of the three fails often, the date isn’t helping you sell — it’s manufacturing support tickets.
When you should NOT show it
- Your stock isn’t reliable. If you also sell in a physical shop or another channel and inventory syncs by hand, the date is calculated on a figure that’s already wrong.
- You order from a supplier. In dropshipping or made-to-order, the real lead time depends on a third party who doesn’t warn you when they slip.
- You sell pre-orders or built-to-order items. There the lead time is an estimate with weeks of margin: pinning a specific day makes information you already had worse.
- You ship to zones with very different lead times. A single date for mainland, islands and abroad is right for some customers and false for others.
- Your carrier won’t give you a lead time you can commit to. If you don’t have it in writing, don’t publish it on the product page.
None of these force you to give it up entirely. They force you not to put it across the whole catalogue, which is a different thing.
When yes, without overthinking it
- Your own real stock, updated by PrestaShop itself as you sell.
- A stable preparation time you know because you pack the orders yourself.
- A carrier whose lead time holds most of the time and that you can defend in writing.
- A catalogue with few exceptions, or with the exceptions clearly identified.
In that scenario the date does exactly what it promises: it answers before the question reaches your contact form.
The middle ground: show it only where you trust it
This is the decision almost nobody considers, and it’s usually the right one. It isn’t “date on” or “date off” across the store: it’s choosing the surface.
In Zeyvro Delivery Date that’s three independent switches — product page, category listing and search results — plus a configurable day range for slower items. The conservative combination is clear: product page only, where the buyer is deciding and where you can surround the date with the rest of the context; listing and search off until you’re confident.
💡 If part of your catalogue is reliable and part isn’t, start with the reliable part. A correct date on a hundred products is worth more than a doubtful one on a thousand.
How to tell whether it went well
No borrowed figures: yours. Before switching it on, note how many “when will it arrive?” messages you get per week in Customer Service. Enable it on the product page only, wait two or three weeks, and count again.
- Lead-time questions drop and complaints don’t rise: the date is well calibrated. You can consider switching it on in the listing.
- Questions drop but late-delivery complaints rise: your date is optimistic. Widen the preparation time before going further.
- Nothing changes: maybe that wasn’t your customers’ doubt. That’s a valid result, and it saves you enabling it across the whole catalogue.
The shortcut, and what it doesn’t do
The module is free and MIT licensed, and it does what it says: it works out the date from the lead times you configure and shows it on the surfaces you enable. It does not guess your supplier’s stock and it does not fix a carrier lead time that isn’t met. If your problem is on the list above, the module won’t solve it — and I’d rather tell you here than have you find out in a review. Earlier in the series: why a date on the product page changes the buying decision and how to show it in PrestaShop 8, step by step.
Frequently asked questions
When should you NOT show a delivery date?
When stock isn’t reliable, when you depend on a supplier who doesn’t warn you about delays, on pre-orders or built-to-order items, and when you ship to zones with very different lead times using a single date for all of them.
Can I show it on the product page but not in the listing?
Yes. They’re independent switches for product page, category listing and search results. Starting with the product page only is the conservative option.
What happens if I get the date wrong?
You’ll see it in customer service: lead-time questions drop and late-delivery complaints rise. That’s the signal your estimate is optimistic and the preparation time needs widening.
Does the module calculate my supplier’s stock?
No. It works out the date from the lead times you configure and shows it where you enable it. It doesn’t guess a third party’s stock and it doesn’t fix a carrier lead time that isn’t met.
How do I know whether it helped?
By counting your own “when will it arrive?” messages in Customer Service before enabling it and two or three weeks after, while watching that late-delivery complaints don’t rise at the same time.
Three switches, your lead times, and no promise you can’t keep. Free, MIT.
Zeyvro Delivery Date for PrestaShop 8 →Zeyvro builds PrestaShop 8 modules from a real store in production. Unobfuscated code.