Post purchase emails are the messages a shop sends after an order goes through. This article sets out what to send after checkout and how far apart to space it. It also covers when to ask for a review, and what to leave out. Plenty of shops send the receipt and then nothing at all until the next campaign.
That silence is expensive. The moment after checkout is one of the few times a customer is actively waiting to hear from you. They have paid, and they want to know the order landed. So the question is not whether to email them. It is what to say, and when.
What post purchase emails actually are
They are a short sequence, set off by the order rather than by the calendar. Each message has one job. Confirm, reassure, help, then ask.
A receipt is not the whole sequence, although it is the first part of it. Receipts belong to the family of transactional emails, which go out one to one and carry different rules about content and consent. Post purchase emails straddle that line. The confirmation and the despatch note stay on the transactional side. A reorder nudge is marketing, so it needs whatever permission marketing needs where you sell.
None of this needs a new tool. If you already send a confirmation, you already have the trigger. What is missing is the four or five messages after it.
Why the second order is worth chasing
You paid to win the first order. Advertising, discounting, the time somebody spent answering questions: that cost lands once. The second order reuses all of it.
A repeat buyer also needs less convincing. They know the parcel arrives, they know the sizing, and they recognise your name in the inbox. Because of that, the second order usually takes a shorter and cheaper message than the first one did.
Repeat orders are the part of email marketing that compounds, since every customer you keep is one you do not have to buy again. Post purchase emails are how you claim that ground while the buyer still remembers you.
A worked example, with round numbers picked to keep the arithmetic simple rather than to describe a typical shop. Say a hundred people order in January, and ten of them order again within three months. You add a sequence, and twelve of the next hundred come back instead. That is two extra orders per hundred buyers. You build the sequence once. The two extra orders repeat with every hundred buyers who follow.
The order post purchase emails should follow
Five messages cover the ground. Send them in this order, then let the product decide the spacing.
The confirmation
Confirm what they bought, what they paid and when it should arrive. Answer the anxious question first, which is whether the order went through at all. Keep the selling out of it, because a receipt that sells reads like a bait and switch.
The despatch note
Tell them it has left the building. Give a tracking link where you have one. A customer waiting on a parcel has a reason to open this one. So it deserves better than the bare template your platform ships with.
The arrival check
A few days after delivery, ask one question: did it turn up in one piece. This catches a complaint before it becomes a public review, and it costs you a reply rather than a refund.
The help message
Show them how to get the most out of what they bought. Care instructions, a setup video, the two settings nobody ever finds. Usefulness here is what earns the right to ask for something in the message after it.
The ask
Now request the review, or suggest the next order. Choose one, and never put both in the same email. A message carrying two requests usually gets neither.
When to send post purchase emails
Timing follows the product, not a template. The right spacing is the one that matches how somebody genuinely uses the thing they bought.
For a fast moving item, the whole sequence might finish inside a fortnight. For a sofa, the arrival check could sit a month out, because the customer has barely lived with it yet. Ask when the buyer would have formed a real opinion, then send after that point rather than before it.
Two rules survive every product. Delivery messages must never arrive after the parcel does. Review requests must never arrive before the customer has used what they bought.
Post purchase emails also have to fit around your normal campaigns. If a newsletter lands the same morning as the arrival check, one of them gets ignored, so pause the broadcasts for anybody currently inside the sequence.
Asking for a review without nagging
One ask, one reminder, then silence. Somebody who has ignored two requests is unlikely to change their mind on the third. A third mostly teaches them to skip your name in future.
Name the product they actually bought. A generic line about reviewing your recent purchase reads as a form letter, while naming the item suggests a person is behind it, even when nobody is.
Do not pay for reviews, and do not trade a discount for one. Review platforms set their own rules on incentives, so check the terms of the one you use first. Worse, an incentive filters out the honest middle, since the people who bother to reply are the ones chasing the reward.
The reorder nudge, and how to time it
Where a product runs out, the reorder nudge does the most obvious work in the sequence. Time it to the point where the customer is nearly out, rather than the day after they bought.
Work the window backwards from the product itself. If a pack holds roughly a month of use, the nudge belongs about a week before the end, while some is left and there is no reason to shop around. Where use varies from person to person, ask them in the help message and keep the answer.
For things that never run out, the nudge becomes a suggestion instead. What goes with what they bought. What the same sort of buyer looks at next. Keep it to one or two ideas, because a grid of everything is a catalogue, and nobody reads a catalogue in an inbox.
What to leave out of post purchase emails
Leave out the discount, at least early on. A voucher sent hours after a full price order teaches the buyer to wait next time, and it can cost you the margin on business you had already won.
Skip the second introduction to your brand. If they joined the list before buying, your welcome series has already told that story, and repeating it wastes the one message they were certain to read.
Cross selling does not belong in the confirmation either. That email has a single job, and burying the delivery date under recommended products is how a support ticket begins.
Segmenting post purchase emails by what somebody bought
One sequence for everything is where these programmes stall. Advice that helps a first time buyer is rarely the advice that helps somebody on their fourth order.
Split on two things to begin with: the product category, and whether this was a first order or a repeat. That gives four versions, which is enough work for a quarter and enough difference for a reader to notice.
Deeper segmentation can wait. It only pays once the simple version runs properly, and a segment nobody has written content for is just an empty list with ambitions.
Measuring post purchase emails honestly
Open rates flatter this sequence, because a delivery message is one the customer is already waiting for. A high open rate there tells you the parcel matters, not that the email worked. Judge the work on outcomes instead.
- Second order rate: how many first time buyers order again inside a fixed window.
- Time between the first order and the second, watched across several months.
- Review volume from the ask, plus the share of replies that raise a problem.
- Unsubscribes from inside the sequence, which tell you when it pushes too hard.
Set the window before you look, then leave it alone. A second order rate over ninety days is a different number from one over a year, and moving the goalposts mid quarter is how a programme comes to look like a success it never was.
Compare like with like. If you change the sequence, watch the next group of buyers rather than the whole list. The whole list still holds people who bought before the change. A number that mixes the two will move for reasons you cannot see.
When the sequence has run out of road
Some buyers will not come back, and a sequence that keeps asking turns into noise. Once the reorder window has passed twice with nothing, move them out of the flow.
They belong in a win back attempt instead, which is a different message with a different tone. If that fails too, letting somebody go quietly beats paying to send emails nobody opens.
A first version worth building
Start with four messages: confirmation, despatch, arrival check, review ask. Add the reorder nudge once you know how long the product really lasts.
Write them as plain text with one link each. Elaborate templates slow the build and rarely change the outcome at this stage. Then read the sequence end to end in order, as a customer would, and cut anything that repeats itself.
Give it a quarter before judging it. The first order is the hard one and you have already made it, so post purchase emails only have to keep the door open. If the cart recovery sequence runs as well, you have covered both sides of the checkout: one set of messages before the order, and this set after it.
Frequently asked questions
What are post purchase emails?
Post purchase emails are the messages a shop sends after an order, beyond the receipt itself. A typical sequence confirms the order, says when it shipped, checks that it arrived, helps the customer use it, and then asks for a review or a second order. The order itself sets them off rather than a campaign calendar, so every buyer meets each message at the right moment for their own purchase.
How many emails should follow an order?
Four or five suits most shops. A confirmation, a despatch note, an arrival check and a review ask cover the basics, and a reorder nudge earns its place when the product runs out. More than that and the sequence starts competing with your normal campaigns. Fewer than that and you are relying on the customer to remember you unprompted, which is a lot to ask.
How soon should the first message go out?
Immediately. A confirmation should land within a minute of payment, because the buyer is waiting to see that the order went through. Everything after it follows the product. Send the despatch note when the parcel leaves, the arrival check a few days after delivery, and the review ask once the customer has had time to form an opinion. Slow confirmations create support tickets before anything has even shipped.
Should I send a discount straight after somebody buys?
Usually not. A voucher arriving hours after a full price order teaches that buyer to hold off next time. You also give away margin on a sale you had already made. There is a fairness problem too, since the person who paid full price yesterday sees the code today. Keep offers for later in the relationship, or for somebody who has clearly gone quiet. Early on, usefulness does more work: care advice, setup tips, and the question your support team hears most.
When is the right time to ask for a review?
After the customer has actually used the product, never on the day it lands. For something simple a few days is enough. For anything needing assembly, a first wash or a bit of learning, give it a week or two. Post purchase emails that ask too early get a review of the courier rather than the product, which helps nobody. If somebody replies with a complaint instead, answer that first and drop the review request for them.
How do I time a reorder nudge?
Work backwards from how long one purchase lasts, and count the days rather than guessing. Your own order history gives you that number. Look at the customers who did reorder, and take the middle of the gap between their orders. Send it a little before that point, so the customer has no reason to shop around. For products that never run out, drop the nudge and send one related suggestion instead.
Do post purchase emails need marketing consent?
It depends on what the message does, and the rules differ from country to country. A receipt or a delivery update tends to sit on the transactional side of that line rather than the marketing side. Post purchase emails that sell something, such as a reorder nudge, normally need whatever permission your local rules require. Keep the two kinds apart in your platform, so an unsubscribe from marketing never stops a delivery notice. Check the rules where your customers live before you assume.
How should I measure post purchase emails?
Judge them on second orders rather than opens. Customers open a delivery message because they want the parcel, not because the email persuaded them. So count how many first time buyers order again inside a fixed window. Then watch whether the gap between the first order and the second gets shorter. Post purchase emails in a small shop will not give a clean read for months. Look at the trend across several groups of buyers rather than at last week.