Increase Your Sales by Retargeting Customers With Post Purchase Email

Most stores only think about retargeting in one direction, chasing people who almost bought, through ads, through pop-ups, through discount codes.

But there’s a much easier audience sitting right there, doing nothing. The customers who already bought.

Post purchase email is how you retarget them. Not strangers who clicked an ad once. Real customers who already trusted you enough to pay. And retargeting that group is a completely different game, cheaper, faster, and far more likely to turn into another sale.

Why Retargeting Your Own Customers Beats Chasing New Ones

Getting a new customer costs a lot more than getting an existing one to buy again. Most estimates put it at 5 to 7 times more, sometimes higher depending on the industry.

That gap is the whole story.

Now think about your own store. Returning customers already make up close to 41% of revenue at most established brands. That’s nearly half the business, already coming from people who bought before.

The question isn’t whether repeat customers matter. They already do. The question is whether you’re actively retargeting that group on purpose, or just hoping some of them come back on their own.

A well built post purchase email flow is how you make that happen on purpose, instead of leaving it to chance.

Why Post Purchase Email Increases Sales, in Plain Numbers

A few numbers worth sitting with:

• A personalized post-purchase offer can lift retention by up to 18%.
• These emails get opened 40 to 50% more than regular promotional campaigns, since the customer is already checking their inbox.
• The average store sends over three emails trying to get someone to buy, for every one email sent after they’ve bought.
• Products with several genuine reviews convert far higher than products with none, and review requests are one of the easiest wins in a retargeting sequence like this.
  
  

None of this needs a bigger budget. It needs attention pointed at a channel that’s already outperforming most of what gets prioritized instead.

If you haven’t set up your abandoned cart recovery flow yet, that’s usually the other half of this conversation. The two work best together, one recovers a sale that almost didn’t happen, the other retargets a sale that already did.

The Follow-Up Doesn’t Start at Checkout. It Starts at Completed.

Here’s a distinction that gets missed a lot.

There’s a difference between a transaction finishing and an order actually being completed. The real retargeting opportunity only opens up once the second one happens.

Order placed just means the payment went through. The customer hasn’t received anything yet. Anything sent here, a confirmation, maybe a shipping update, is transactional. Necessary, but not where the relationship gets built.

The moment that actually matters is when the order is marked completed. The product is in the customer’s hands now. This is the real starting line for retargeting them toward another sale.

Here’s how that plays out in practice:

• Before completed: transactional only. Confirmation, shipping update if there’s transit time. No marketing content yet.
• At completed: the real follow-up begins. A short, useful note, not a sales pitch.
• Completed + 5 to 7 days: review request. The customer has had time to form a real opinion.
• Completed + 7 to 10 days: cross-sell or upsell. Trust has settled by now.
• 60 to 90 days after completed: if there’s no second order, this is where a win-back message kicks in.
  
  

Why this matters: if a review request fires off “order placed” instead of “order completed,” it can go out before the product even arrives. That feels tone deaf, and it’s an easy mistake to make.

WooCommerce actually makes this simple, since “completed” is its own distinct order status, separate from processing or pending. Shopify handles it through fulfillment status instead. Either way, the retargeting sequence should key off that completed event, not the moment the cart was paid for.

Building a Sequence That Retargets the Right Way

A working post purchase email sequence usually looks like this:

1. Confirmation, sent instantly.
2. Shipping update, if there’s meaningful transit time.
3. A short note once the order is completed.
4. A review request, 5 to 7 days later.
5. A cross-sell offer, 7 to 10 days after that.
6. A win-back message, if there’s no second order within 60 to 90 days.
   
   

Each step is triggered by something real happening with the order, which is what makes it a retargeting sequence and not just a string of reminders. Nothing here runs on a fixed calendar guess.

Real Stores Retargeting Real Customers

These aren’t hypothetical post purchase email examples, they’re what’s actually running in stores today.

A skincare brand on Shopify built a simple three-message sequence. Confirmation, a usage tip once the order was marked complete, and a review request six days later with a small incentive. That’s it. It still generates reviews and repeat orders without anyone touching it.

A WooCommerce home goods store added one cross-sell message, sent 7 days after the order hit completed status. It recommends a bundle based on what was actually bought, using real product data pulled automatically for every order, retargeting each customer with something relevant to them specifically.

One coffee brand added a single subscribe-and-save offer, sent 10 days after the order was completed. That one addition turned close to 1 in 5 first-time buyers into subscribers.

Small changes. Real revenue, from customers who were already there.

Where This Breaks Down If You’re Not Careful

A few things quietly undo the value here.

Discounting too early trains customers to wait for a deal before buying again. Sending the same message to first-time and repeat buyers ignores that they’re in different relationships with your brand. And triggering everything off “order placed” instead of “order completed” means messages can land before the customer even has the product.

A post purchase email is only as good as the trigger it’s tied to. Get the timing wrong, and even well written copy won’t save it. The value isn’t automatic just because the messages exist, it comes from retargeting each customer at the moment that’s actually true for them.

Setting This Up on Shopify and WooCommerce

The economics are the same on both platforms. The setup is slightly different.

Shopify post purchase email flows can trigger confirmation and shipping messages off the standard order events. But review requests and cross-sell offers should wait for the fulfillment status to hit delivered, not the initial order creation. If you’re using the Adflipr app for Shopify, this separation is already built into the flow templates, so retargeting starts at the right moment automatically.

WooCommerce post purchase email automation works a little differently, since “completed” is its own order status there, distinct from processing or pending. That makes it easier to get right, the signal already exists. The Adflipr plugin for WooCommerce listens specifically for that completed status, so the retargeting sequence starts the moment the order is actually done, not the moment the cart was paid for.

Where Adflipr Fits In

Adflipr is built for Shopify and WooCommerce stores specifically. A few things that help here:

• Native integration with both platforms, so completed-status triggers work correctly out of the box.
• Active contact billing, so you pay for contacts who actually engage, not your whole list.
• Pre-built templates for confirmation, review request, and cross-sell sequences.
• Revenue attribution per message, so you can see what’s actually working.

If you want to see how this looks in practice, Adflipr’s pre-built post-purchase automation templates have a few worth looking at.

One Last Thing

You don’t need a bigger ad budget to increase your sales. You need to stop ignoring the customers who already bought.

Post purchase email is how you retarget them, at the right moment, with the right message, without spending another rupee reaching people who’ve never heard of you. Build it around the order actually being completed, not the moment they paid, and it starts paying for itself fast.

FAQs

What is a post purchase email?

An automated message sent after a customer completes an order. Confirmations, shipping updates, review requests, and cross-sell offers all fall under this, each triggered by something real happening with the order.

How does post purchase email increase sales?

It retargets customers who already bought from you, instead of strangers who haven’t. That group converts faster, costs less to reach, and is far more likely to buy again once the sequence is running.

Should these emails trigger off order placed or order completed?

The transactional ones (confirmation, shipping) can trigger off order placed. But review requests and cross-sell offers should wait for order completed, since that’s when the customer actually has the product and has something to say about it.

Should these emails trigger off order placed or order completed?

The transactional ones (confirmation, shipping) can trigger off order placed. But review requests and cross-sell offers should wait for order completed, since that’s when the customer actually has the product and has something to say about it.

Is retargeting existing customers cheaper than paid advertising?

Yes. It’s built once, using data your store already has, and it doesn’t need ongoing ad spend or bidding to keep reaching the same customers.

What mistakes reduce the value of a retargeting sequence like this?

Discounting too early, treating first-time and repeat buyers the same, and triggering the whole sequence off order placed instead of order completed.

Does this work the same way on Shopify and WooCommerce?

The idea is identical. Shopify uses fulfillment status to signal completion. WooCommerce has “completed” as its own distinct order status, which makes it a bit more straightforward to trigger off correctly.

What’s the simplest way to start?

Three messages tied to real events: a confirmation, a review request after the order is completed, and a cross-sell offer about a week after that. Expand from there once it’s running.