Stellar Projects is a Klaviyo agency and, more broadly, an email marketing agency for e-commerce brands on Shopify: we set up, structure, and manage the channel end-to-end. For the accounts we manage, email accounts for an average of 25-30% of revenue, a share most stores leave dormant due to poorly constructed flows.
This page presents our offering directly: what a Klaviyo agency does, the results you can expect, our pricing structure, and our onboarding process. If you first want an assessment, we offer a free Klaviyo audit of your account: 30 minutes, your flows scrutinized, actionable recommendations.
Summary
What a Klaviyo Agency Does for You
A Klaviyo agency transforms your customer base into a recurring revenue channel. Specifically, our intervention covers five areas, from technical to creative:
- Audit and Technical Setup. Clean integration with Shopify, event tracking (product views, carts, purchases), deliverability configuration (dedicated sending domain, DMARC), and migration from your current tool if needed: our page migrating to Klaviyo details this step.
- Automation Flows. The scenarios that sell while you sleep: abandoned cart, welcome series, post-purchase, re-engagement. This is the core of ROI, detailed in the results section below.
- Campaigns and Design. Editorial calendar, creation of on-brand templates, copywriting, A/B testing of subject lines and content.
- Segmentation and List Growth. Optimized signup forms, RFM segments (recency, frequency, monetary value), intelligent exclusions to protect your deliverability.
- Reporting and Management. A monthly meeting, clear indicators (email revenue share, revenue per recipient, conversion rate per flow), and a prioritized roadmap.
If you're new to the tool, start with our guide what is Klaviyo, then explore the duo Klaviyo and Shopify, the combination we work with daily.
Expected Results from Email Marketing
Well-structured email marketing should generate 25 to 30% of your revenue: this is the average we observe on Klaviyo accounts managed by our agency. Below 15%, your account has a structural problem, not a channel problem.
Not all flows are created equal. Here, in order, are those that generate the most revenue for our managed accounts:
| Priority | Flow | Why it generates revenue |
|---|---|---|
| 1 | Abandoned Cart and Checkout | It recovers already convinced buyers: the best revenue per email sent |
| 2 | Welcome Series | The peak of attention occurs within 48 hours of signup: first sale and tone of the relationship |
| 3 | Post-Purchase and Cross-Sell | Selling to an existing customer is cheaper than acquiring a new one |
| 4 | Winback (Re-engagement) | It brings back dormant customers before they are lost |
| 5 | Browse Abandonment | It converts product interest into a return visit, without being intrusive |
A concrete example from our brands: at Cabania, our treehouse bed brand managed on Shopify and Klaviyo, an email campaign highlighting a new product generates an average of €3,000 in revenue. That's one campaign, not a month of email marketing.
“We entrusted Stellar Projects with the migration of our two Magento sites to Shopify. Thanks to their Shopify + Klaviyo expertise and 360° support, we were able to make the switch in record time and saw improved performance at all levels!”
Amandine Danulot, E-commerce Manager
Our Transparent Pricing Structure
The cost of a Klaviyo agency depends on three things: the state of your account, the size of your database, and the desired campaign frequency. Here are our indicative ranges, to be refined during scoping:
| Service | Content | Indicative Range |
|---|---|---|
| Initial Setup | Audit, Shopify integration, deliverability, foundational flows, templates | €2,000 to €5,000 (one-time) |
| Monthly Support | Campaigns, flow optimization, segmentation, monthly reporting | €1,000 to €3,000 per month |
| Performance-Based Model | Remuneration linked to email revenue generated, for mature accounts | Upon quote |
This should not be confused with the platform subscription itself, billed by Klaviyo based on the size of your database: we have detailed these tiers in how much Klaviyo costs. Good news: on a well-managed account, the tool and the agency pay for themselves through the email revenue they generate.
Our 4-Step Onboarding Process
You're not signing up for a vague subscription: you're entering a clearly defined process, with deliverables at each stage.
- Free Audit. We scrutinize your account: deliverability, existing flows, segmentation, current email revenue share. You'll leave with a diagnosis and priorities, whether you work with us or not.
- Setup and Quick Wins. Foundations first: tracking, sending domain, forms, then the 2-3 highest ROI flows (abandoned cart at the top) to generate revenue from the first month.
- Full Deployment. All priority flows, on-brand templates, campaign calendar, and RFM segments.
- Continuous Optimization. A/B tests, flow iterations, new sequences based on your launches, monthly reporting with an action plan.
The Checklist for Choosing Your Klaviyo Agency
Not all agencies are created equal, and discrepancies result in lost months. Before signing, check these seven points, including with us:
- Klaviyo partner status and up-to-date certifications: this is the minimum foundation.
- Proficiency in your e-commerce platform. A Klaviyo expert unfamiliar with Shopify will improperly configure tracking and events: demand dual expertise.
- Quantified client cases: email revenue share, revenue per flow, before/after. Beware of promises without numbers.
- Transparent pricing: setup, monthly, and scope written black on white, like the table above.
- Ownership of your account. The Klaviyo account, templates, and data belong to you: verify this in the contract.
- A strong deliverability doctrine: gradual ramp-up, list hygiene, exclusions. A poorly prepared mass send can burn your domain for months.
- Revenue-oriented reporting, not just open rates: what matters is the attributable email revenue.
To calmly compare French market players, we have compiled an honest overview of the best Klaviyo agencies, where we are transparently featured.
Why Stellar as Your Klaviyo Agency?
Because email marketing does not exist in a silo. We are a Klaviyo Partner in France and a Shopify agency simultaneously: the store, tracking, flows, and campaigns are conceived as a single system. This is what makes the difference between a well-configured tool and a channel that accounts for 25 to 30% of your revenue. And we apply our methods to our own brands before recommending them to our clients: Cabania is our real-world laboratory.
Ready to put your customer base to work? Book your free Klaviyo audit, or first explore our ultimate guide to Klaviyo. And if your project goes beyond email (store creation, redesign, migration), our Shopify brief to fill out is the fastest way to get a structured quote within 48 hours.