Hey, it's Geb from Email Rev Lab!
At 12:45 this morning, I signed up for Transparent Labs' list through their pop-up.
Before asking for my email, the pop-up asked me one question: "What are your current fitness goals?" Four options. I clicked "Improve Health and Longevity."
At 12:46 am, I had their welcome email. One minute flat. That part? Brilliant.
Then I opened it.
The Brand Bridge:
Transparent Labs was founded in 2015 by Trevor Hiltbrand on a single idea: if you put science-backed doses on the label, you don't need to hide behind a proprietary blend. Full transparency. Every ingredient. Every dose. No fillers. No fluff.
That mission built them into what their parent company Nutra Holdings calls "the market leader in all-natural sports nutrition" in the U.S.
But here's the irony. A brand that built its entire reputation on showing you exactly what's inside every product... just sent me a welcome email that ignored everything I told them about myself.
They know what I want. They just aren't using it.
The Pop-up Test:
Strong. Genuinely smart.
The "You've got 10% off" headline is direct. The goal-selection step (Build Lean Muscle / Improve Strength / Lose Body Fat / Improve Health and Longevity) is real segmentation data collected before the email is captured.
That's a two-step pop-up that warms the lead AND tags them by intent. Most brands don't do this.
The problem is what happens after.
The Tech Test:
Delivery time: 1 minute from sign-up to inbox.
That's the gold standard. Invesp data shows welcome emails sent in real-time convert at 4.01% versus 0.94% for delayed sends. Transparent Labs passes this test easily.
The tech is working. The strategy isn't keeping up with it.
The Inbox Test:
Landed in Primary. Subject line: "Here's 10% off." Preview text: "Welcome to Transparent Labs."
Primary placement is a win. That's good deliverability and a clean sender reputation.
But the subject line is a missed opportunity. "Here's 10% off" is generic. It could be from any supplement brand sending any welcome email anywhere. For a brand built on standing apart from the industry, this subject line doesn't stand apart from anything.
The Email Creative Test:
The email opens with a hero image and "Claim your 10% OFF." Discount code (WELCOME10) is visible. Clean, branded layout. Professional.
Below the fold: "No fillers, no compromises. Just clean, effective ingredients." Four trust icons. Category links to Bestsellers, Protein, Blog, and Subscription.
It looks good. But it says nothing about health and longevity.
I told them exactly what I care about. I got a generic 10% off email that could've gone to a bodybuilder or a 60-year-old looking to improve their joint health.
The segmentation data from the pop-up is sitting in Klaviyo, unused.
The Solution:
The primary bottleneck here is a disconnected flow. The pop-up collects goal data. The welcome email ignores it. Here's the fix:
1. Create goal-based Klaviyo segments. Tag subscribers at the point of opt-in using the pop-up answer (Build Lean Muscle / Improve Strength / Lose Body Fat / Improve Health and Longevity). In Klaviyo, use a hidden field or Segment Builder to route each tag into its own flow trigger.
2. Build four variants of the welcome email. The hero image, headline, body copy, and product recommendations should reflect the subscriber's stated goal. For "Improve Health and Longevity" subscribers: feature wellness products, highlight third-party testing, and reference longevity-specific benefits. This takes one afternoon to set up if the flow structure already exists.
3. Personalize the subject line. For health and longevity subscribers: "Your 10% off. Plus, the cleanest supplements for long-term health." Not generic. Not interchangeable. Actually relevant.
The Impact Statement:
Most supplement brands collect segmentation data through their pop-up and never use it in the welcome flow, leaving their highest-converting email operating at a fraction of its potential.
The Curiosity Hook:
Here's what I'm curious about: if Transparent Labs is already sending goal-based content on their website (they have a full "Shop by Goal" section), how much revenue are they leaving behind by not mirroring that same logic in the first email every new subscriber ever sees?
The Pitch:
Transparent Labs built its business on showing people exactly what's inside every product. They just need their welcome flow to show the same level of intention.
The pop-up is already doing the hard work of asking the right question. The email just needs to answer it.
I send these audits daily because bottlenecks like this can be fixed in one day with the right information.
Want me to audit your Klaviyo account the same way?
Reply to this email, and I'll send you a free breakdown of where your welcome series is leaking revenue.
Geb Vence
P.S. I run Email Rev Lab. We've generated $334k+ for brands by building systems that feel like conversations, not ads. I only work with 3 brands per month. Schedule your call here.