We build and optimize websites and retention programs
Built on Shopify. Run through Klaviyo. Enhanced with Meta and Google Ads. Designed to make your ecommerce brand more money.
Selected Partners
The work
How Shinola Grew Klaviyo Revenue 27% During BFCM
How Promix Turned Retention Into a Multi-Million Dollar Growth Engine
An Organic Social Framework that Led to Over 1.1 million New Followers for Marchesa
Baking Email and Paid Advertising Growth into Levain Bakery
How Bleacher Report Drove $4M in Revenue Through Email, SMS & Advertising
Brewing a Faster, Smarter Storefront for nutpods
From the Mound to the Mission: How Mariano Rivera Elevated His Foundation Online
Rebuilding the Web’s Largest Movie Poster Store for Speed, Scale, and Growth
How Duncan Toys Modernized Its Ecommerce Experience with Shopify
We've run the P&L you're trying to grow
Retention, paid media, and Shopify development sit under one roof because we've launched, run, and sold ecommerce businesses ourselves. We know what it takes and it shows: Zettler is one of a handful of agencies worldwide to hold both Shopify Platinum and Klaviyo Elite partner status.
Services
Three disciplines. One operating system.
Each service can stand alone. The value compounds when they work together.
Website Design & Development
Shopify storefronts designed and developed for brands that have outgrown templates. Performance and brand engineered together.
Retention
Klaviyo lifecycle programs designed around the customer journey. Email and SMS built to compound.
Paid Advertising
Acquisition campaigns across Meta, TikTok, and Google built for brands that measure real outcomes.
Why leading brands trust Zettler Digital
Over 400 brands have partnered with us for retention, advertising, and Shopify optimization since 2013.
What it's like to work with us
"Extremely responsive and proactive. They actively make suggestions to improve performance, not just execute."
"Best team we've worked with in over a decade running this business."
"Zettler has been a valued partner, elevating my social media, building my website, and supporting The Mariano Rivera Foundation."
"A great partner on our full site rebuild. Redesigned and migrated to Shopify 2.0, blending our brand and third-party apps into a faster, more flexible site with zero downtime."
"Zettler Digital has been a game-changer. They built us an organized, data-driven roadmap that keeps everything clear and actionable, with prompt communication throughout."
"Wonderful to work with. Dependable, timely, and like an extension of our team. A scrappy, responsive partner with deep knowledge as our brand keeps growing."
"Working with Zettler Digital has been a great experience. Extremely knowledgeable about Shopify, dedicated to their craft and highly professional."
"We've gone through 10-15 developers. Zettler Digital is heads above everyone else. They communicate clearly, understand the issues, and solve problems with ease."
"Direct-to-consumer ecommerce was a new channel for us. Having Zettler as a partner across email/SMS and paid advertising has been impactful."
"Zettler Digital transformed our email program into one of our most reliable revenue channels."
Best-in-class tools, deployed for revenue
Every retention program, ad campaign, and storefront we ship runs on the tools powering the best DTC brands.
Frequently asked questions
You work directly with the people responsible for doing the work and have senior, account management oversight across every service. Regular syncs, a live roadmap, and a Slack channel where you get answers same-day, not next sprint.
Our typical customer is bringing in $1–30 million a year in annual revenue. Is that not you? We also work with emerging businesses building toward that range and larger enterprises past it. Since 2013, Zettler Digital has partnered with over 400 brands across a variety of industries, supporting their growth every step of the way.
It depends on the service.
Shopify design and development is quoted as a fixed project fee based on scope.
Klaviyo retention and paid media run as monthly retainer. Engagements land in the mid four figures to low five figures per month. Some brand partners opt in to a hybrid structure that ties part of the fee to performance. Ongoing Conversion Rate Optimization (CRO) work is priced the same way.
Either way, any proposal you see is tailored to your business.
Ongoing engagements run on a rolling 6- or 12-month term with a clean exit at day 90 if it's not working. We'd rather earn the renewal than trap you in one.
Either. We're built with real expertise across all Shopify design and development, Klaviyo retention, and paid media, but we flex our plan structured to how you're resourced. Missing one function in-house? We fill it. Have a team already? We plug in around them and take just the piece you need.
Kickoff within a week of signing in most cases. There is no lengthy onboarding queue. We're a nimble, senior team, so there's no bench of junior staff to ramp up first.
We recognize every business operates on a different model. We plug into existing teams seamlessly. If you want us to own a specific lane while you or another team owns something else, no problem. We've seen it all.
Against the number that actually matters to your business — revenue growth, profitability, retention — not a channel silo. We track it through proprietary dashboards and reporting built for each account, but the real test is whether the top line moves and the unit economics hold, not whether one channel's attribution looks good in isolation.
On Shopify projects specifically, we also benchmark conversion rate and site performance before and after launch. You see the same numbers we do.
Ready to grow revenue?
Tell us what you're building, we'll tell you what it takes. If we're the right partner, you'll know within thirty minutes.