You finally get a subscription option live on your Shopify store. Then the first subscribe and save campaign goes out to your whole list, including the customers already on a subscription who are already paying you every single month.
They open it, see a discount attached to something they signed up for weeks ago, and either ignore you or email support asking why they aren’t on that rate.
Neither outcome is good. Both are completely avoidable.
Here’s the thing. When you sell subscriptions, the subscription is not a tick box at checkout. It is a product with its own buyers, its own objections and its own email plan. And the moment you have two kinds of customer sitting in one list, segmentation stops being a nice-to-have.
Quick answer: Subscribe and save campaigns only work when your subscription app pushes subscriber data into Klaviyo, the email and SMS platform built for ecommerce. Once that data lands, you build a segment of active subscribers and exclude them from every subscription promo, then send them retention and cross-sell campaigns instead.
Why does selling a subscription change your whole email strategy?
A one-off purchase brand has one basic job in email: get someone to buy again.
A subscription brand has four. Get someone to start. Get them to stay. Get them to spend more while they’re there. Win them back when they cancel. Those are four different messages, to four different people, at four different moments.
What I see again and again is a brand launching a subscription and then emailing exactly the way it did before. Same campaigns, same audience, same offer to everyone. The subscription quietly underperforms, and six months later the founder decides the product just wasn’t right for subscribing.
Usually the product was fine. The targeting was the problem.
Think about what your list actually contains once subscriptions go live:
- People who have never bought anything.
- People who bought once, as a one-off.
- People who bought the trial or smaller size.
- People on an active subscription right now.
- People who paused or cancelled a subscription.
Five groups. Five genuinely different next steps. Send them all the same email and four of those groups get something irrelevant, while the fifth gets a discount it never needed.
How should your subscription app feed data into Klaviyo?
When you’re choosing a subscription app, the first question is not what it costs. It’s what it sends to Klaviyo.
You don’t technically have to integrate the two. Most subscription apps will happily send their own emails: the sign-up confirmation, the upcoming charge notice, the failed payment alert. They work. They also tend to look nothing like the rest of your brand, and the data stays locked inside the app where nothing else can use it.
Integrate it properly and two things change.
First, every subscription email now comes out of Klaviyo, in your fonts, your colours and your voice, sitting alongside everything else you send. One platform, one look, one place to check what’s working.
Second, and this is the part that actually matters, Klaviyo can now see who is a subscriber and who isn’t. That arrives as profile properties and events you can build on:
- Subscription status (active, paused, cancelled).
- Which product or plan they’re subscribed to.
- Next billing date.
- How many successful renewals they’ve had.
- Skipped orders and failed payments.
Data you can’t see is data you can’t segment on, and data you can’t segment on quietly costs you margin every month.
So check the integration before you commit to an app. A cheaper subscription app with a proper Klaviyo integration will serve you better than an expensive one that keeps its data to itself.
How do you exclude existing customers from subscribe and save promotions?
This is the fix that pays for itself on the first send.
Subscribe and save is the offer where a customer commits to a repeat order and gets a discount, free shipping, or both. It is an acquisition offer. It exists to convert people who are not subscribed yet.
In Klaviyo, a segment is a live, self-updating group of people who match a set of conditions you set once. Build two of them:
- Active subscribers. Anyone whose subscription status property is active.
- Subscription prospects. Anyone who has bought at least once and is not in the active subscriber segment.
Then on every subscribe and save campaign, send to the second segment and add the first one as an exclusion.
Here’s what that actually looks like in your account. You choose your recipients, and in the same step you tell Klaviyo to exclude the active subscriber segment. It takes about thirty seconds, and it stops you handing a discount to people who were already paying you full price on repeat.
Do exactly the same thing in your automations. Your win-back, your replenishment reminder, your “you’re probably running low” nudge: none of those should fire at someone whose next order is already scheduled and paid for. Add the exclusion as a flow filter so it re-checks at every step, not just at the trigger.
Not sure what your account is currently doing with your subscriber data, or whether those segments even exist yet? A Mini Klaviyo Audit is a 15 minute personalised video walkthrough of where your Klaviyo account is leaking revenue, including the segments you should have and don’t. It’s $69.
What should you send your subscription customers instead?
Excluding subscribers from the wrong campaign is only half the job. The other half is having something better to send them.
Subscribers are your highest-value, lowest-attention customers. They set it up once and stopped thinking about it. Your job is to keep them feeling good about that decision, and to grow what they spend without touching the discount lever.
Campaigns that earn their place in front of this segment:
- Education about the product they already own. How to use it properly, what to pair it with, what to expect and when. This matters most when results take time. If a customer expects to notice something in three days and doesn’t, they cancel in week two. So say it at sign-up, say it again at week three, and say it again at week six.
- Cross-sell to the complementary product. If you sell two things designed to be used together, the person subscribed to one is the warmest possible buyer for the other. This is the highest-return campaign most subscription brands never get around to sending.
- Size and frequency upgrades. Someone on the smallest pack who reorders every time is telling you they want the bigger one. Ask them.
- Subscriber-only perks. Early access to a new release, first dibs on limited stock, a free add-on at their sixth renewal. None of that requires a discount.
- Behind the scenes and founder content. Subscribers stay for the relationship as much as the product. Give them something a one-off buyer doesn’t get.
- Referral asks. Send these after the second or third successful renewal, once they’ve actually experienced the product, not on day one when they’ve experienced a receipt.
If you’re short on angles, our list of newsletter ideas that always work is a decent starting point, and most of them can be rewritten for a subscriber audience in about ten minutes.
Which Klaviyo flows does a subscription brand need that a one-off brand doesn’t?
Every store needs the basics first. Pop-up, welcome series, abandoned cart, browse abandonment, post-purchase and win-back. If those aren’t built and tested yet, start with the 6 core Klaviyo flows every ecommerce store needs before you go near subscription automation.
Once those are running, a subscription brand needs a second layer on top. These flows only exist because the subscription exists:
- Subscriber welcome. Separate to your standard welcome series. It confirms the decision, sets expectations on delivery and billing, explains how to skip or change an order, and tells them what to expect from the product over the first month. Reducing early cancellations starts right here.
- Upcoming charge reminder. A short, genuinely useful heads up before the card gets billed. It prevents surprise cancellations and chargebacks, and it gives them a window to add something to the order.
- Failed payment recovery. An expired card is not a cancellation. It’s an admin problem you can solve with two or three well-timed emails. This one recovers revenue you were about to lose for no good reason.
- Skip and pause save. When someone skips an order, that’s a signal. Ask why, offer a frequency change instead of a cancellation, and remind them what they’ll run out of.
- Cancellation win-back. Different again to your standard win-back, because you know precisely what they had, when they left, and how long they lasted. Time it to when their supply would have run out.
- Milestone and loyalty. Three months in, six months in, twelve months in. Thank them properly. Subscription retention is a relationship, not a billing schedule.
These sit alongside your retention work, not instead of it. The retention flows most product brands forget matter just as much when your customers are on a subscription.
Is a subscribe and save discount always the right offer?
No, and this is where plenty of brands give away margin they never needed to give away.
A discount is one reason to subscribe. Convenience is another, and for the right product it’s the stronger one. “Never run out” is a genuinely compelling promise for anything a customer uses daily, and it costs you nothing.
I’ve worked with brands running both models in the same store. Some products carry a modest ongoing discount because the category is competitive. Others carry no discount at all, just the promise that it turns up before you run out. Both convert, because the offer was matched to the product instead of applied across the whole catalogue.
The other lever is a launch offer. Locking in a founding rate for your first group of subscribers works well when you’re starting from zero, because it builds recurring revenue and gives you real behavioural data fast.
Two warnings on that one. People can cancel at any time, so a strong launch offer with no retention plan behind it just builds you a cancellation cliff three months out. And whatever rate you lock in, you’re honouring it for as long as they stay, so pick a number you can live with in eighteen months.
Decide what a subscriber is worth to you before you decide what the subscription costs them.
Key takeaways
- Your subscription app must integrate with Klaviyo. Without that data, you cannot tell a subscriber from a prospect, and every campaign after that is a guess.
- Build an active subscriber segment on day one and exclude it from every subscribe and save promotion, campaign and flow.
- Subscribers get a different content track: education, cross-sell, upgrades, perks and referral asks, not the offer they already took.
- A subscription brand needs six flows a one-off brand doesn’t, starting with the subscriber welcome and the failed payment recovery.
- A discount isn’t the only reason to subscribe. Convenience converts too, and it protects your margin.
- Segmentation is not an advanced tactic here. It’s the thing that makes the whole subscription model work.
Frequently asked questions
Do I need to integrate my subscription app with Klaviyo, or can I just use the app’s own emails?
You can use the app’s emails, and plenty of brands do at the start. The trade-off is that they usually look off-brand and, more importantly, the subscriber data stays inside the app. Once it’s integrated, Klaviyo knows who is subscribed, which means you can exclude them, segment them and sell to them properly.
How do I stop subscribers receiving my subscribe and save campaign?
Create a segment of profiles with an active subscription status, then add that segment as an exclusion when you set up the campaign recipients. For automations, add the same condition as a flow filter so it re-checks before every send, not just at the trigger.
What’s the first subscription flow I should build?
The subscriber welcome, because most cancellations happen early and most early cancellations come from unmet expectations. Set out what happens next, when they’ll be billed, how to skip an order, and what the product realistically does over the first month.
Should I offer a discount on subscriptions, or is that eating my margin?
It depends on the product. For consumables people genuinely run out of, convenience alone can carry the offer. For competitive categories where a customer is choosing between you and three others, a modest ongoing discount usually earns its cost back in lifetime value. Test it per product rather than applying one rule to everything.
Can I run subscription email marketing on a small list?
Yes, and starting early is better because your segments build themselves as the data arrives. What matters is that the integration and the segments exist before the subscribers do, so you’re never retrofitting them onto a list that’s already grown.
If your campaign calendar needs work next
- How Often to Send Marketing Emails (Hint: More Often)
- Advanced Email Copywriting Tips for High-Converting Klaviyo Campaigns
- Revenue Per Recipient: The Email Metric That Matters
Ready to stop discounting your best customers?
Subscriptions are the closest thing a product brand has to predictable revenue. They’re also the fastest way to give away margin if your segmentation isn’t set up to protect it.
If you’d rather have someone build the integration, the segments and the full subscription flow layer for you, so your subscribers get the right email and everyone else gets the offer, that’s exactly what we do.
Book a call: inflowmarketing.co/book-a-call
Chat soon,
Jess