Promix Nutrition is a fast-growing, better-for-you supplement brand built on premium ingredients, sharp value, and a lean operating model. As international interest surged, especially across core English-speaking markets, Promix saw growing demand from creators, athletes, and global audiences.
But demand alone doesn’t drive growth.
To scale internationally, Promix needed an experience that felt local, delivered reliably, and built trust from checkout through delivery. By leveraging Passport Global, Promix launched a turnkey localized and duty-paid international experience, unlocking stronger conversion, repeat behavior, and sustainable growth across dozens of markets.
At a Glance
Challenges
- International conversion was limited prior to localization improvements
- Heavy products made shipping expensive, creating checkout friction
- Customs and documentation complexity led to delivery issues and CX strain
- Supplement compliance varied by country and was difficult to navigate
- Limited confidence to scale international marketing investment
Solution
- Passport Global Cross-Border Management
- Localized storefront experiences by market (currency, pricing, duties & taxes)
- Duty-paid delivery to eliminate surprise fees at the door
- Hands-on compliance guidance and operational support
- Growth advisory through ongoing business reviews and optimization recommendations
Wins
- Conversion rate increased 200% internationally
- International repeat customer rate reached 40%
- International web traffic grew 167%
- Significant growth across international orders and revenue
- Expansion into dozens of international markets with operational confidence
The Challenge: International Demand Without Conversions
Promix had meaningful international interest, driven in large part by creator and athlete communities. But before Passport, the buying experience wasn’t built to convert that demand.
Sierra Simon, VP of Marketing at Promix, shared that even when Promix could attract overseas shoppers, the experience broke down at the moments that mattered most: shipping, customs reliability, and clarity at checkout.
Promix also sells heavy products, which makes international shipping costs climb quickly. Without a more structured international setup, shoppers would reach the site, but drop off when shipping felt expensive or uncertain, or when the delivery experience didn’t feel predictable.
Operationally, supplement compliance requirements added friction and risk, sometimes preventing shipments from arriving smoothly and creating additional CX workload.
Why Promix Chose Passport
Promix didn’t want to stitch together multiple point solutions or build international operations in-house. They wanted one partner who could handle complexity end-to-end while making the experience simple for both the team and the customer.
As Sierra put it, Passport felt like a true “360 fix” for international: not just software installed into Shopify, but a hands-on partner that helps brands navigate an otherwise daunting expansion.
The Solution: Passport Global Cross-Border Management
Promix uses Passport Global Cross-Border Management to deliver a predictable international experience without taking on international complexity internally.
What Passport enabled for Promix:
- Localized buying experiences by market (currency, pricing, duties & taxes)
- Duty-paid delivery so shoppers don’t get hit with surprise fees on arrival
- More reliable cross-border shipping to improve delivery completion and reduce customs friction
- Hands-on support that feels closer to a partner than a plug-in
- Ongoing growth advisory and optimization through business reviews
200% Conversion Rate Growth Powered by Localization
Promix knew international customers needed a buying experience that felt local with clear pricing, local currency, and duties and taxes handled upfront. Passport Global delivered that localization at scale, helping reduce friction at checkout and increase trust in the purchase experience.
That localized experience became a measurable conversion lever with conversion rates increasing 200%
40% Repeat Customer Rate Growth from a More Trusted Checkout and Delivery Experience
Promix also needed international delivery to feel consistent and predictable. Customers had to understand total cost upfront and trust that their order would arrive smoothly, without surprise fees or customs-related issues.
Promix has always earned loyalty through product quality, but internationally, repeat purchases depended on the full end-to-end experience. With Passport powering a cleaner checkout and more reliable delivery journey, Promix was able to turn first-time international buyers into returning customers.
With duty-paid delivery and smoother customs execution, Promix reduced delivery issues and created a more consistent post-purchase experience that lightened international CX strain.
Effortless Expansion Into Dozens of Markets
For a supplement brand, expanding internationally isn’t just about turning on shipping. It’s about navigating a complex web of country-by-country restrictions, documentation requirements, and compliance nuances that can slow down growth fast.
Sierra shared that before Passport, figuring out what could ship where wasn’t always straightforward. But with Passport as a partner, Promix was able to move faster and expand with confidence without getting bogged down in operational back-and-forth.
The Results: More Conversion, More Sales, and Repeat Growth Powered by Trust
Once Passport Global was live, Promix’s international channel shifted from an inconsistent growth opportunity into a dependable revenue stream the team could confidently build around. With localized checkout and a more reliable duty-paid delivery experience, Promix drove a 200% increase in their international conversion rate and a 40% growth in their international repeat customer rate. International customers weren’t just buying, they were coming back.
That lift in conversion and repeat behavior gave Promix the confidence to expand into additional markets and invest more aggressively in international influencer marketing and other growth efforts. With their international experience working end-to-end, Promix was able to turn increased demand into measurable performance resulting in 12x growth in total international sales.
Promix didn’t need a patchwork of tools or a major operational lift to scale globally. They needed an experience that converts, shipping customers trust, and a partner who could support expansion without adding headcount. By combining Passport’s localization and delivery expertise with Promix’s product quality and marketing engine, Promix turned international growth into scalable revenue and repeatable customer loyalty.
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