What Metrics Should I Track for Post-Purchase Marketing?
The post-purchase marketing metrics to track
The most useful post-purchase marketing metrics are the ones closest to the action you want after delivery. For most brands, that means six numbers: repeat purchase rate, reorder conversion, review rate, QR scan rate, offer redemption rate, and revenue from post-purchase campaigns.
Here is the short list:
- Repeat purchase rate: the share of customers who place another order
- Reorder conversion: the share of insert or email recipients who come back and buy
- Review rate: the share of delivered orders that turn into reviews
- QR scan rate: the share of delivered inserts that get scanned
- Offer redemption rate: the share of buyers who use the code or offer on the insert
- Revenue from post-purchase campaigns: sales tied back to your insert, QR destination, or follow-up email
If you sell on OpoShop, those numbers are usually enough to tell whether your post-purchase work is helping or just adding paper to the box.
If you want a tighter way to judge insert performance, this next step helps connect the dots between what you print and what buyers actually do.
What is post-purchase marketing?
Post-purchase marketing is everything you do after someone places an order to get a second action from that customer. That second action could be a repeat purchase, a review, a newsletter signup, a care guide visit, or a discount-led reorder.
For a small brand, post-purchase marketing usually looks pretty physical and pretty practical. You print a thank-you card, a care card, or a reorder offer. You place it in the box. You send a follow-up email after delivery. You ask the customer to do one clear thing next.
That matters for brands on OpoShop because the sale is not really finished when OpoShop's checkout is complete. The package arrives. The customer opens it. The insert gets seen. That is another decision point.
A jewellery brand might include a care card with a QR code that opens a cleaning guide. A candle brand might include a reorder card with a discount code. A skincare brand might send buyers to a review page. Different actions, same idea.
Why do post-purchase marketing metrics matter?
Post-purchase marketing metrics matter because they show whether your retention work is doing anything beyond feeling thoughtful. A nice card is nice. A card that leads to more reviews or more second orders is better.
Small teams do not have time to track twenty numbers. Most OpoShop merchants packing orders themselves need a clean answer to one question: did this insert or follow-up create the action we wanted?
That is why the unboxing moment is worth tracking. You already paid to get the order. You already packed the box. You already have the customer's attention for a few seconds. If a thank-you card, care card, or reorder offer can turn that moment into a review or another order, that is one of the cheapest places to improve retention.
And yes, reviews and repeat purchases should be tracked separately. A review ask and a reorder offer are trying to do different jobs. If you blend them together, you lose the signal.
How do you track post-purchase marketing metrics?
You track post-purchase marketing metrics by giving each insert or campaign one job, one trackable destination, and enough time to show a pattern. That is the part many brands skip.
A simple method works well:
If you pack ten orders a day, you can do this manually. If you pack two hundred orders over a date range in your OpoShop store, you need a more repeatable setup.
A strong insert setup also uses personalized details where they help. A card with the buyer's name and order number feels connected to the order, and that can make a review request or care instruction feel more legitimate. Then the QR code or offer code does the tracking work.
Here is the weak versus stronger version:
Weak: “Scan here for more.” Stronger: “Emma, thanks for your order. Scan this code to leave a review for order #1842.”
The first line is vague. The second line tells the buyer exactly what to do and gives you a cleaner way to measure whether the card worked.
Using QR codes on insert cards makes the next action easier to track, especially for review asks, care guides, and reorder offers.
What are the best metrics to track by post-purchase goal?
The best metric depends on the job of the campaign. A review card should not be judged the same way as a reorder offer.
Here is the cleanest way to match metric to goal:
| Post-purchase goal | Best metric | What it tells you |
|---|---|---|
| Repeat purchase | Repeat purchase rate | How many customers come back and buy again |
| Discount-led reorder | Offer redemption rate and reorder conversion | Whether the insert offer actually turns into orders |
| Reviews | Review rate | How many delivered orders turn into reviews |
| Care or education content | QR scan rate and destination visits | Whether customers use the care guide or usage instructions |
| Newsletter signup | Signup conversion rate | Whether buyers join your list after delivery |
| Overall campaign value | Revenue from post-purchase campaigns | How much tracked sales activity came from the campaign |
A thank-you card with a QR code to a review page should be judged on review rate first. A reorder insert for candles or skincare should be judged on offer redemption and reorder conversion first. A care card for apparel or jewellery should be judged on scans and visits first, because education is the immediate goal.
That is also how you know if a thank-you card or reorder offer is working. You do not ask whether the card looked good. You ask whether the card produced the action it was built for.
For brands on OpoShop, this is usually enough:
- Track reviews separately from repeat orders
- Track scans separately from orders
- Track offer use separately from general repeat buying
Those buckets stop you from crediting the wrong insert for the wrong result.
What mistakes should you avoid when measuring post-purchase marketing?
Most measurement problems come from muddy setup, not bad effort. The numbers get confusing because the campaign was confusing first.
The biggest mistake is tracking too many things at once. If one card asks for a review, a newsletter signup, an Instagram follow, and a reorder, you will not know what mattered.
Another mistake is caring too much about scans and not enough about orders or reviews. QR scan rate is useful, but a scan is only the first step. If scans are high and orders are flat, the landing page or offer may be the problem.
A third mistake is failing to use unique codes or unique QR destinations. If every insert sends buyers to the same page with the same discount code, you cannot tell whether a care card, thank-you card, or reorder offer did the work.
Judging too early is another common miss. If you generated inserts for a whole week of OpoShop orders, printed them, and shipped them across different delivery windows, you need enough time for boxes to arrive and buyers to act.
Here is the simple version:
- Do not track vanity numbers alone
- Do not mix multiple goals on one insert
- Do not reuse the same code everywhere
- Do not call a campaign a failure before customers have actually received the package
What do we recommend for small ecommerce brands?
We recommend a small scorecard with weekly checks for activity and monthly checks for outcomes. That is enough for most one to ten person teams.
A practical weekly scorecard looks like this:
- Number of delivered orders with inserts
- QR scan rate by insert type
- Review count from review asks
- Offer redemption count from reorder cards
A practical monthly scorecard adds the bigger picture:
- Repeat purchase rate
- Reorder conversion by insert type
- Revenue from post-purchase campaigns
- Review rate by delivered order group
If you sell candles, skincare, or supplements that naturally reorder, put more attention on redemption and repeat orders. If you sell jewellery, apparel, or handmade gifts, review rate and care-guide scans may matter more first. The right scorecard follows the product.
For OpoShop merchants, the goal is not a giant reporting system. The goal is a handful of numbers you will actually check and use.
Best answer: Track the numbers closest to the next action you want after delivery. If a card asks for a review, measure review rate. If a card asks for a reorder, measure redemption and repeat orders. Small teams on OpoShop do better with a short scorecard they review every week and month than a giant spreadsheet they stop opening after two weeks.
If you want a simpler way to turn store orders into branded, trackable insert cards, Insertly helps you generate print-ready inserts with personalized details and QR destinations.
FAQs
What is the most important post-purchase marketing metric?
The most important post-purchase marketing metric is the one tied to the action you want next. For most small brands, repeat purchase rate is the big one, but review rate or offer redemption rate can matter more if that is the job of the campaign.
How do I track repeat purchases from package inserts?
Track repeat purchases from package inserts by using a unique QR destination, discount code, or landing page tied to that insert. Then compare how many customers who received that insert came back and ordered again.
Should I measure QR code scans or actual orders?
Measure both, but do not stop at scans. QR code scans tell you the insert got attention, while actual orders tell you the offer or destination did its job.
How many post-purchase metrics should a small brand track?
Most small brands should track four to six numbers, not fifteen. A short list usually covers scans, reviews, repeat orders, offer redemptions, and tracked sales from post-purchase campaigns.
Can package inserts send customers straight to a review page?
Yes. Package inserts can send customers straight to a review page with a QR code, and that is one of the cleanest ways to measure review asks after delivery.
How do package inserts compare to post-purchase emails for tracking?
Package inserts are easier to tie to the unboxing moment, while post-purchase emails are easier to click and automate. The smartest setup usually tracks both separately so you can see what happened in the box and what happened in the inbox.
Summary
The right post-purchase marketing metrics are the ones closest to the action you want after delivery. Track repeat purchase rate, reorder conversion, review rate, QR scan rate, offer redemption rate, and revenue from post-purchase campaigns. Then adjust the insert copy, QR destination, or offer based on what buyers actually do.
If you are already shipping orders and adding cards to the box, you do not need a more complicated system. You need a clearer one.
