ABout Us

Who We Are

Stacks is a Dublin-based e-commerce marketing agency built for one thing: customer acquisition. We work with B2C brands in fashion, lifestyle, wellness, and nutrition — specifically those doing €10k or more a month in revenue who are ready to scale profitably.

We don't do everything. We do paid advertising, CRO, and creative strategy — and we do them exceptionally well.

How We Work

‍We're a tight-knit team — and that's exactly why it works. With larger agency, you're one of dozens of clients, handed off to whoever's available. Here, you work directly with the same experienced people from the first conversation to campaign execution. No account managers passing messages. No juniors learning on your budget.

Most agencies treat creative as a checkbox. We treat it as the engine. Scaling an e-commerce brand profitably requires a full flywheel — creative strategy, content sourcing, ad design, and performance reporting all working together. Pull one out and the whole thing slows down.

We've built our process around that flywheel. Our team handles everything from briefing and sourcing UGC through our network of 400+ creators across Ireland, the UK, and the US, to designing the ads, running the campaigns, and reporting on what's actually working.

Team

Cathal Boyle

Founder

Obsessed over what makes eCommerce brands grow. He founded Stacks to put that knowledge to work for clients — combining paid media, creative strategy, and conversion thinking under one roof.

aniuska Coy

Head Designer

A talent for knowing what works — and changing course fast when it doesn't. Her design work sits at the intersection of aesthetics and performance, always in service of the brand and the bottom line.

Sara Treacy

Marketing Manager

Sara leads UGC and client partnerships at Stacks — and she's the person everyone wants in their corner. Organised, personable, and deeply reliable, she makes sure projects land the way they're supposed to.

Our Track record

Founded in 2021 by Cathal Boyle, Stacks grew out of the e-commerce boom that followed the pandemic — a period that showed exactly what was possible when paid social and creative strategy were done right. What started as a one-person operation is now a focused team, with partnerships Google, Shopify, Klaviyo, and WooCommerce.

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We're operators as much as we are an agency, having successfully scaled our own in-house e-commerce brands to 7-figures. We run our own campaigns, spend our own budgets, and live with the results (something that most marketing agencies do not do) — which means the strategies we bring to clients are ones we have already backed with our own money - See what our clients say.

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What to expect

‍No long-term contracts. No bait-and-switch where you sign with a senior and get handed to a junior. You work with the same experienced people from the first call to campaign execution.

If you think there's a fit, book a consultation and we can arrange an ad audit if your brand is at the right stage to work with us.

It's a straightforward conversation — no hard sell, just an honest look at where you are and where you want to go.For the right brands, we'll follow that up with a full ad audit at no cost. We'll show you what's working, what isn't, and what the benchmarks look like for brands successfully scaling in your space. You leave knowing exactly where you stand.

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How Stacks Started

Stacks was founded in 2021 by Cathal Boyle, a designer and entrepreneur with a track record of taking brands from zero to seven figures.

When the pandemic hit in 2020, retailers pivoted hard toward e-commerce. We witnessed businesses scaling from zero to six figures a month through digital channels. That forced evolution became our specialty—scaling e-commerce brands profitably through paid social and Google Ads.

What started as a one-man operation has grown into a full-time team of three servicing amazing D2C e-commerce brands and collaborating with our network of 400+ content creators across Ireland, the UK, and the US.

What We Do

We specialize in three core areas for B2C e-commerce brands:

‍Paid Advertising: We're Meta Business Partners with expertise in Facebook, Instagram, and Google Ads. Our strategies focus on profitable customer acquisition, not vanity metrics.

‍Conversion Rate Optimisation: We optimise Shopify and WooCommerce stores and pages for conversion and continuously improve them through data-driven testing.

‍UGC Acquisition: We've built an extensive network of creators and manage the entire UGC process so your creative pipeline never runs dry. We focus exclusively on B2C e-commerce—specifically fashion, lifestyle, wellness, and nutrition brands.

What Makes Stacks Different

We Practice What We Preach: We manage ad spend for dozens of brands that take e-commerce seriously. Including our in-brands daily. You get tactics that work now, not outdated playbooks.

‍Experienced Strategists: You work with the same experienced people from consultation to campaign execution. No bait-and-switch.

‍We Adapt to What Works: When UGC started to outperform traditional ads, we built an entire creator network around it. Other more traditional agencies use strategies from 5-10 years ago. We create ads that work today.

‍No Long-Term Contracts: Our clients stay because we deliver results.

‍Radical Transparency: Our reporting is honest. We'll tell you exactly how campaigns perform from a profitability perspective, no sugarcoating.

See what clients say on our Clutch profile.

Our Partnerships

We're official partners and have extensive experience with Meta, Google Klaviyo & Shopify — giving us early access to beta features and platform insights.

Ready to Work Together?

If you're a B2C e-commerce brand in lifestyle, fashion, wellness, home or nutrition looking to scale profitably, book a consultation call and FREE ad audit.
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We'll discuss your acquisition strategy and whether we're the right fit. No high-pressure sales tactics. Just an honest conversation.