Klaviyo Email Marketing
Klaviyo Email Marketing Agency for Shopify and DTC Brands
A Klaviyo agency plans, builds and runs your email and SMS program inside Klaviyo: automated flows such as welcome, abandoned cart and post-purchase, segmented campaigns, and the deliverability setup that keeps it all out of spam. Because Klaviyo syncs your Shopify orders, products and customers, it can target by what people bought and browsed. We use that data to grow repeat revenue, not open rates.
Klaviyo is where most of our email marketing services for online stores happen. It is built for eCommerce, and it connects tightly to Shopify, so every order, product view and cart becomes something you can act on.
That power is also the problem. A Klaviyo account can be set up in an afternoon, with a welcome email, an abandoned cart flow and a monthly newsletter, and then left for years. The data to do much more is sitting there unused: who bought once and never came back, who buys every six weeks, who only buys on discount, who browsed but never added to cart. Turning that data into flows and segments is the difference between an email tool and a revenue channel.
What makes a Klaviyo account earn.
Three layers. Most accounts have the first, half of the second and almost none of the third.
Clean store data
The Shopify integration syncs orders, products and customers, but only if it is set up correctly. Onsite tracking, consent capture and product catalog sync are the foundation for every flow and segment you build.
Flows that cover the whole customer lifecycle
Not just welcome and abandoned cart, but browse abandonment, post-purchase, replenishment, winback and sunset. Each one is triggered by behavior, so it runs without anyone pressing send.
Deliverability and list health
Authentication, a branded sending domain, engagement-based sending and regular list cleaning. Without them, even good emails land in spam, and the damage builds quietly.
What our Klaviyo services include.
Get your free audit →Klaviyo account review
Once you are a client, a full review of your account: integration and tracking checks, flow coverage and performance, segment logic, deliverability settings, list health, and revenue attribution settings, ranked by revenue at stake.
Flow strategy and builds
Welcome, browse abandonment, abandoned cart and checkout, post-purchase, cross-sell, replenishment, winback and sunset flows, with branching by customer type and purchase history.
Segmentation
Segments by purchase history, product interest, order frequency and engagement, plus predictive segments (such as expected next order date) once your account has enough order history for Klaviyo to calculate them.
Campaign calendar and creative
A planned calendar of campaigns built around launches, seasonality and margin, with design and copy produced with our copywriting team.
Deliverability setup and monitoring
SPF, DKIM and DMARC, a branded sending domain, one-click unsubscribe, engagement-based sending rules, and monitoring of spam complaints and inbox placement.
SMS and signup forms
Klaviyo SMS for time-sensitive messages, with proper opt-in, plus signup forms and offers that grow the list without training everyone to wait for a discount. Linked to our CRO work.
Who this is for
How we work
How we take over or build a Klaviyo account.
Flows before campaigns, because flows run every day without anyone touching them.
Account review & revenue map
With access to your Klaviyo account, we review integration, tracking, flows, segments and deliverability, then estimate where the biggest revenue gaps are in the customer lifecycle.
Fix the foundations
Authentication and sending domain, consent capture, catalog sync, suppression of unengaged profiles, and any broken or duplicated flows.
Build the core flows
The highest-value flows first, then branching and personalization by customer type, product and purchase history.
Campaigns, testing & reporting
A segmented campaign calendar, structured tests on offers, timing and content, and monthly reporting on revenue per recipient, repeat purchase rate and list health.
The core Klaviyo flows, in build order
| Flow | Trigger | What it does |
|---|---|---|
| Welcome series | Joins the list | Introduces the brand, sets expectations, and converts first-time buyers |
| Abandoned checkout / cart | Starts checkout or adds to cart without buying | Recovers buyers who were close to ordering |
| Browse abandonment | Views products without adding to cart | Brings back interested visitors with what they looked at |
| Post-purchase | Places an order | Onboards, cross-sells, and asks for reviews at the right time |
| Replenishment | Expected reorder date | Reminds customers when consumable products run out |
| Winback | No order for a set period | Re-engages lapsed customers before they are gone |
| Sunset | No engagement for a set period | Suppresses unengaged profiles to protect deliverability |
The right order depends on your traffic and catalog, but welcome, abandoned checkout and post-purchase almost always come first.
Klaviyo deliverability and the Gmail and Yahoo sender rules
Since 2024, Gmail and Yahoo require bulk senders to authenticate with SPF, DKIM and DMARC, include one-click unsubscribe, and keep spam complaint rates low (Google's stated threshold is below 0.3%). Klaviyo supports all of this, but it has to be configured: a branded sending domain, DNS records, and sending rules that stop you emailing people who never open. In the US, CAN-SPAM also requires a physical address and a working unsubscribe, and SMS needs explicit consent. We set all of it up before scaling sends. Google publishes the email sender guidelines, and the FTC publishes a CAN-SPAM compliance guide.
What a Klaviyo account review checks
These checks need access to your Klaviyo account. In the free audit, that access is optional; in ongoing work, it is part of the job.
- Shopify integration, onsite tracking and catalog sync working correctly
- Which lifecycle flows exist, which are missing, and whether any overlap or conflict
- Segment definitions and whether campaigns actually use them
- Authentication, sending domain, complaint rates and list hygiene
- Discount dependency: how much email revenue relies on offers
- Attribution settings, so reported email revenue isn't overstated
The free audit is website-only by default: signup forms, list growth offers and on-site tracking. Read-only access to your Klaviyo account is optional; if you choose to share it, the free audit also covers the checks above. It is delivered in 5 business days and signed off by our founder.
Email + SMS
One customer, one conversation, two channels.
Klaviyo runs email and SMS from the same customer profiles, so the two channels can work together instead of messaging the same person twice about the same thing. SMS is best for short, time-sensitive messages. Email carries the story, the product detail and the long-term relationship.
Explore email marketing →- Explicit SMS opt-in, kept separate from email consent
- Shared suppression so customers are not double-messaged
- SMS for launches, cart recovery and shipping moments
- Email for education, cross-sell and loyalty
Why Klaviyo is a margin lever, not just a channel
Paid acquisition gets more expensive every year. The stores that can keep paying for it are the ones that earn more from each customer after the first order. That second, third and fourth purchase is mostly driven by email and SMS, and it costs almost nothing to send.
Klaviyo gives you the data to do this well. The work is turning that data into flows and segments that feel relevant to the customer and pay off for the business, then protecting deliverability so the messages actually arrive.
We measure Klaviyo in revenue per recipient, repeat purchase rate and contribution margin, because that is growth that shows up in the bank, not the dashboard.
Related services
Questions, answered.
Still unsure? Ask us directly →
What does a Klaviyo agency do?
A Klaviyo agency sets up and runs your email and SMS marketing in Klaviyo: integration and tracking, automated flows, segmentation, campaign planning, design and copy, deliverability, and reporting. The goal is more revenue from existing subscribers and customers, especially repeat purchases.
Which Klaviyo flows should I build first?
Welcome series, abandoned checkout and cart, and post-purchase. These cover the moments with the highest intent. Browse abandonment, replenishment, winback and sunset come next, once the core flows are working.
Is Klaviyo better than Mailchimp for Shopify stores?
For most Shopify stores, yes. Klaviyo is built for eCommerce, with deep Shopify data for segmentation and flows based on orders, products and browsing. Mailchimp can work for simpler newsletters. The best choice depends on your catalog, order volume and how much you plan to automate.
Can you take over our existing Klaviyo account?
Yes. We start with a review of what is already there, keep what works, fix what is broken, and rebuild flows only where needed. You keep ownership of the account, templates and data throughout.
Do you handle Klaviyo SMS?
Yes. We set up SMS with explicit opt-in and coordinate it with email so customers are not messaged twice about the same thing. SMS works best for short, time-sensitive messages such as cart recovery, launches and shipping updates.
How do the Gmail and Yahoo sender requirements affect Klaviyo?
Bulk senders must authenticate with SPF, DKIM and DMARC, offer one-click unsubscribe and keep spam complaints low. In Klaviyo that means setting up a branded sending domain and DNS records, and sending to engaged profiles. We configure this before scaling volume.
How do you measure Klaviyo performance?
Revenue per recipient, flow and campaign revenue, repeat purchase rate, and list health (growth, engagement and complaints). We treat open rates with caution, because Apple Mail Privacy Protection inflates them, and we check attribution settings so email revenue is not overstated.
Find the revenue sitting unused in your Klaviyo account.
We will review your signup experience and, if you choose to share optional read-only Klaviyo access, your flows and deliverability, then show you where repeat revenue is leaking. Free, in 5 business days.