Hey there,

What if we told you... that you could outperform your biggest Black Friday campaign by 120%—WITHOUT offering a single discount? 

Sounds too good to be true, right? Well, that's exactly what we did for HD Muscle using hyper-personalized email content.

This campaign didn’t just hold its own against BFCM—it completely crushed it. And the best part? All the orders came from existing customers, improving customer retention.

You must have read how personalised content is the only way forward for email marketing - today we’re here to show you PROOF!

How We Did It: The Personalization Playbook

Here’s how we turned this simple campaign email into a sales machine:

Looks pretty standard, right? Not quite!

Each subscriber doesn’t see the exact same email. The images dynamically change based on their order history, making every email feel personal and tailored just for them.

1️⃣ Personalised Hero Image: Instant Attention Grab

Instead of a hero-ing a generic product, the hero image dynamically changed to feature the product the user ordered. If they previously bought pre-workout, they saw an image featuring their exact product, making the email feel custom-made just for them.

💡 Why it works: When users see something familiar, they pay attention. More attention = higher engagement, meaning a higher chance they scroll through and read.

2️⃣ Personalized Product Recommendations (NOT your usual dynamic Klaviyo Block)

We classified the audience into four groups:
✅ Users who bought pre-workout but nothing else
✅ Users who bought post-workout but nothing else
✅ Users who bought intra-workout but nothing else
✅ The fallback group (everyone else)

Then, using historical cross-sell data, we recommended the right products to each group and best-sellers to the fallback group.

💡 Why it works: These weren’t random recommendations—they were strategic product pairings designed to increase order value.

3️⃣ RetainIQ Widgets = More Creative Flexibility, More Conversions

Unlike cookie-cutter Klaviyo recommendation blocks, RetainIQ’s widgets let us make the email look and feel on-brand while dynamically adjusting to each customer. The result? A high-converting product recommendation section that felt like a 1:1 personal shopping experience.

🔥 The Results? This will BLOW your mind 

📈 120% increase in email revenue (compared to their best BFCM campaign sent last year)
💰 535% increase in AOV—simply by recommending the right products

We were shocked too, so here are screenshots directly from their Klaviyo account

Oh, and let’s not forget—this all happened during a non-peak season for the brand.

Want These Results for Your Brand?

If you’re still sending one-size-fits-all emails, you’re leaving serious money on the table. Let’s fix that.

We’re offering a FREE audit to show you how to hyper-personalize your email content and maximize revenue.

👇 Let’s talk. Book your free audit today!