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    Epsilon Blog

    Why your loyalty programme is your most underrated marketing asset

    By: Epsilon Marketing•June 18, 2026
    A smiling woman with red shopping bags stands at a checkout counter as two other women wait in line behind her.

    Most marketing leaders treat their loyalty programme as a retention mechanic. Sign customers up, give them points, win their repeat purchase. The trouble with that framing is it underplays what the programme is actually doing. A well-run loyalty programme is one of the most valuable marketing assets a brand owns, and most companies are only using a fraction of what it generates.

    This blog is for marketing leaders who already know what a loyalty programme is, and want to know what it could be doing for the rest of their marketing.

    The asset most marketers undervalue

    A loyalty programme is the most reliable mechanism a brand has for generating consented, first-party customer data at scale. In a market where third-party cookies are in structural decline, consumers are more selective about what they share, and GDPR has raised the bar on how data is collected and used, that exchange has become rare and valuable.

    The brands pulling ahead are the ones that treat their loyalty programme not just as a retention tool but as the spine of their marketing data strategy. Writing in CX Network, Epsilon's Mrinalini Chowdhary makes the case that loyalty has quietly become the most strategic data channel a brand can run; every interaction it creates, a sign-up, a purchase, a profile update, a reward redemption, a response to an offer, is information that can fuel every other part of marketing.

    The points and rewards are the surface. The data and identity underneath is the asset.

    The commercial case lines up with the strategic one. McKinsey's research found top-performing loyalty programmes can lift revenue from members who redeem points by 15% to 25% annually, by increasing purchase frequency, basket size, or both. And programmes that are integrated into the wider marketing stack consistently perform even better, because the value compounds.

    What a loyalty programme actually fuels

    When marketing leaders look at a loyalty programme as marketing infrastructure rather than a retention scheme, the picture changes. The same data that powers the points and rewards on the surface can power most of the marketing stack underneath it.

    A well-integrated loyalty programme directly fuels:

    • Personalised email and app communications. Member behaviour and stated preferences let you send the right offer to the right person at the right moment, instead of the same generic message to a list. Open rates and conversion typically improve substantially when communications are loyalty-data-driven.
    • Sharper audience targeting in paid media. Loyalty data lets you build genuine first-party audiences and suppress the customers you already have, so acquisition budget goes to genuine new prospects rather than people who would have bought anyway.
    • On-site and in-app personalisation. Real-time content and product recommendations based on what each member actually does, rather than what an average visitor might do.
    • Predictive marketing. Loyalty data lets you anticipate churn, identify high-value lookalikes, and predict next-best-product or next-best-offer with far more accuracy than is possible from purchase data alone.
    • Closed-loop measurement. When your loyalty data is connected to your media exposure data, you can finally answer the question that matters most: did the campaign actually change behaviour, or did it just hit the people who were going to buy anyway.

    Boots is a useful illustration of what this looks like at scale. Through its Advantage Card programme, Boots delivers personalised offers via app and email, uses gamified mechanics like Play & Win to drive engagement, and applies predictive analytics to anticipate what each customer is likely to need next. The launch of Boots Media Group has turned the same loyalty data into a retail media revenue stream, with brands paying to reach Boots audiences through campaigns measured against actual transactions.

    The same first-party data is doing five jobs at once: serving the customer, fuelling marketing, enabling measurement, opening a new commercial channel, and creating a competitive advantage that competitors without comparable data simply can't match.

    That is what a loyalty programme can be when it is treated as marketing infrastructure rather than a discount mechanic.

    Three signs your loyalty data is being underused

    In most organisations, the gap between what a loyalty programme could be doing and what it actually does is structural, not technological. Three patterns to look for:

    1. Your loyalty data lives in a different team from your media data. If your loyalty programme is owned by CRM or retention, and your paid media is owned by acquisition or performance, the loyalty data is probably not influencing your media decisions in any meaningful way. The teams optimise on different KPIs, run on different reporting cycles, and rarely share a single customer view. The result is media spend that is blind to your existing customer relationships and loyalty activity that is invisible to the media plan.
    2. Your paid media doesn't suppress your existing loyal customers. This is the single most common sign loyalty data isn't being used properly. If you are running prospecting campaigns and your loyalty members are receiving them, you are spending acquisition budget on people you already have. For most brands, suppressing existing customers and high-value lookalikes from acquisition campaigns is the fastest way to improve return on ad spend without changing anything else about the media plan.
    3. Your loyalty programme can't tell you whether a media campaign actually changed behaviour. If your loyalty data and your media exposure data don't connect at an individual level, you can't measure the incremental impact of a campaign on your most valuable customers. You see redemptions, you see media performance, but you can't tie them together. Closed-loop measurement, where you can attribute an exposure to a redemption or a purchase, is one of the highest-value capabilities a loyalty programme can unlock and one of the most commonly missing.

    If any of these sound familiar, the loyalty programme is probably not the bottleneck. The bottleneck is usually the way the programme connects to the rest of the marketing stack.

    Where to start

    Unlocking the value tends to require three things to be in place at the same time, none of which is technically complicated, but most of which need cross-functional alignment to work properly.

    The first is a single customer view.

    A platinum-tier member in the app should be the same person in your email database, your media activation, and your in-store data. This is where identity resolution becomes the foundation underneath everything else, because without it the loyalty data is fragmented across channels and the rest of the marketing stack can't act on it.

    The second is shared accountability.

    Loyalty data adds the most value when CRM, performance marketing, and brand marketing are all using it. That usually means rethinking how loyalty is owned in the organisation, treating it as a horizontal capability rather than a programme run by one team.

    The third is the measurement framework to prove the impact.

    Member vs non-member spend, incremental margin, closed-loop attribution of media exposure to loyalty behaviour, customer lifetime value by acquisition channel. The right metrics show whether the integration is working, and which parts to invest in further.

    The brands that get all three in place tend to stop thinking of their loyalty programme as a programme at all. It becomes the customer data infrastructure that everything else runs on.

    Read the loyalty programme ultimate guide

    If you are rethinking how your loyalty programme connects to the rest of your marketing, the next step is to look at how leading brands are designing programmes for this kind of integrated value.

    Epsilon's ultimate guide covers how modern loyalty programmes are built, the foundations underneath them, and the trade-offs that come with scaling them.

    Read The Ultimate Guide to Loyalty Programmes

    In this article

    1. The asset most marketers undervalue
    2. What a loyalty programme actually fuels
    3. Three signs your loyalty data is being underused
    4. Where to start
    5. Read the loyalty programme ultimate guide
    Topics:Loyalty

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