Klaviyo agency for ecommerce and DTC brands
Most Klaviyo agencies decorate. We engineer. Email Optimize is a Klaviyo email marketing agency founded by an aeronautical engineer. We run your Klaviyo account like a revenue system, not an art gallery. We're behind $250M+ in attributed email & SMS revenue across 800+ brands, mostly by removing the drag other agencies charge you to add. Our target for a well-run DTC account is simple: 30-40% of revenue from email and SMS.
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Trusted by
800+ brands
/ Sheet 01 / The numbers
SPEC.01
$250M+
attributed email + SMS revenue
SPEC.02
800+
brands
SPEC.03
3 markets
US, UK and Australia, one team
SPEC.04
EST. 2017
aeronautical-engineer founded
Why most Klaviyo agencies plateau your revenue.
Klaviyo's own benchmark data is blunt about it: automated flows generate around 41% of email revenue from just 5.3% of sends. The other 94.7% (the pretty weekly campaigns your agency spends most of its hours on) fights over the scraps.
So when an agency's whole deliverable is a content calendar of designed newsletters, they're optimising the 94.7% and calling it a strategy. In our experience, a heavily designed email takes around 30 hours to produce, and a stripped-down, conversion-engineered one about 4. The agency selling you the 30-hour version is selling you its utilisation rate, not your revenue. Our email design and copywriting is built the other way round: live text, one message, one action.
We build the machine that runs the 41% first (the flows, the segmentation, the deliverability), then make every campaign earn its place in the inbox. That's the difference between an agency that sends email and one that engineers it.
Source: Klaviyo Benchmark Report, 2025 (analysis of 180,000+ brands).
What a Klaviyo email marketing agency is actually for.
A Klaviyo email marketing agency has one job: make email and SMS a bigger, more reliable share of your revenue. Not more sends. Not prettier templates. Revenue per recipient, flow contribution and attributed orders, measured in dollars and reported every month.
A Klaviyo marketing agency worth hiring does five things, in this order. It gets you into the inbox (authentication, warm-up, list hygiene). It builds the flows that earn while you sleep (welcome, abandoned cart, browse, post-purchase, win-back). It segments the list so every send is relevant to the person receiving it. It runs campaigns that earn their place instead of filling a calendar. And it instruments all of it, so you can see what is working and what to strip out. Our Klaviyo agency services below follow that order, because the order is where most programs go wrong. Still deciding on the platform itself? Read what Klaviyo is and who it's for, how it stacks up in Klaviyo vs Mailchimp, and our honest Klaviyo review.
Not every brand needs the full agency. Some need a Klaviyo consultant to direct an in-house team. Some want to hire Klaviyo experts to run the whole program. Some just need the free Klaviyo audit and a written plan. We will tell you which one you are. Want the whole channel, email and SMS, looked after by one team? That is our ecommerce email marketing agency service. In the US, the UK or Australia? See where we work.
Three brands. Receipts.
Selected from 800+ engagements. The brief, the intervention, the number that moved.
Better Body Co.
/ Health & Supplements
of revenue from email (from 10%)
/ Brief
Email at 10% of revenue. Inflection point looming.
/ Intervention
Stripped flow architecture. Rebuilt around purchase behaviour. 3-month consulting program with 10+ person in-house team.
Popl
/ NFC Tech
of revenue from email + SMS
/ Brief
Email + SMS stuck under 20%. Y-Combinator scaling pressure.
/ Intervention
Separated B2B and B2C journeys. Fixed deliverability fundamentals. Removed visual noise from every flow over 21 months.
Relaxium
/ Supplements
incremental email + SMS
/ Brief
INC 5000 brand, 1,040% growth over 3 years. Email lagging.
/ Intervention
Ongoing Head of Retention Marketing role. Plain-aesthetic emails, instrumented architecture, monthly tested cadence.
/ More case studies in the archive
See all mission reportsThe revenue you're losing at the inbox.
Most "email revenue problems" are deliverability problems wearing a creative costume. It's the number-one thing DTC buyers worry about and the number-one thing agencies bury below the design portfolio. We lead with it.
1 in 6
emails never reach the inbox
Global inbox placement sits around 83%. If a sixth of your list can't see what you send, no subject line or hero image will save it. We fix placement first.
<0.3%
spam-complaint ceiling, or Gmail rejects you
Since 2024, Gmail and Yahoo require SPF, DKIM, DMARC and one-click unsubscribe, and cap complaints. From late 2025 it's hard rejections, not warnings. We keep you compliant and warm.
AI
now rewrites your preview text
Apple Mail and Gmail generate AI summaries around your email. Bake your message into images and the AI can't read it. We write live-text emails that survive the summary and land the CTA in the first line.
Apple Intelligence & Gmail summaries, 2025–26
Klaviyo services we run
Full-stack Klaviyo, nothing else. No Facebook ads, no websites, no Google campaigns. Every one of our Klaviyo services is Klaviyo-native and ecommerce-specific, built by people who only do this. Once an account has enough order history, we put Klaviyo’s predictive analytics to work: predicted customer lifetime value, churn risk and expected date of next order feed CLV segments, so VIP offers, replenishment reminders and win-backs reach each customer on their own clock. That is retention strategy built on data, not on a send calendar.
Klaviyo Setup
Account architecture, Shopify integration, authentication, and domain warm-up done right on day one, so nothing gets rebuilt in month three.
Flow Automation
The flows that quietly print money: welcome, abandoned cart, browse, post-purchase, win-back. In Klaviyo’s benchmarks, flows are 5.3% of sends and about 41% of email revenue.
Outsourced Email Marketing
Segmented sends that earn their place in the inbox instead of burning your list to hit a calendar.
List Growth
Popups and capture built to grow subscribers who actually buy, not a vanity number that tanks your deliverability.
Deliverability
Authentication, reputation, and inbox-placement engineering. The part of "email revenue" that has nothing to do with design.
SMS Marketing
Compliant opt-in flows and email + SMS sequences that compound instead of competing.
Also on the menu: Klaviyo migration from another platform, email design and copywriting, and the free Klaviyo audit. Or see every service.
The Profit Loop.
Not a content calendar. A named, repeatable system that turns your email program into a compounding asset. It's the same loop we've run across 800+ brands. See the full method →
Pre-flight audit
We measure the four forces of your program: lift (opens), thrust (clicks), drag (friction), weight (list quality). You get the exact dollar figure you’re leaving on the table.
Engineer the flows
We build the automated flows that drive the majority of email revenue from a fraction of the sends, then wire them to purchase behaviour, not send dates.
Instrument everything
Revenue per recipient, flow contribution %, attributed orders. We report in dollars. Open rate is a leading indicator, not a KPI.
Optimise monthly
Every flow, tested and stripped every month. We win by removing drag, not adding decoration. Email is a compounding asset, not a one-off project.
How we work vs. how creative agencies work
A heavily designed email can take around 30 hours to produce and gets called "elevated content." In our experience, a conversion-engineered email takes about 4 hours and gets the click. The difference shows up in your revenue, not your inbox.
Other agencies
They decorate.
- The goal A beautiful email worth showcasing in their portfolio
- The metric Open rate, "engagement," brand consistency
- The email Image-heavy, scrollable, multi-section, designer-approved typography
- A/B testing Subject lines, occasionally
- The reporting Monthly engagement deck with vanity metrics
- Hours per email Around 30 hours of design work
- What you get A pretty inbox
Email Optimize
We engineer.
- The goal The click and the sale. Pretty isn't a goal.
- The metric Revenue per recipient, attributed orders, flow contribution %
- The email One message, one CTA, mostly text, built for inbox placement
- A/B testing Subject + send time + flow architecture + segment + offer
- The reporting Live revenue dashboard. Klaviyo access. Monthly written read-out.
- Hours per email About 4 hours of engineering, not 30 of decoration
- What you get Email + SMS growing as a share of revenue (Popl: under 20% to 50-60%)
If you've been told email is supposed to look like a landing page, you've been sold a billable hour, not a revenue strategy.
Why pretty emails lose: read the manifestoWhat are the weaknesses of Klaviyo? Six, and how we engineer around each.
We are a Klaviyo partner, so read this knowing we have a stake. Klaviyo is still the right platform for most ecommerce brands that take retention seriously. It also has six weak spots, and every one of them costs money when nobody is managing it. Here they are in brief, with what we do about each.
Cost scales with every active profile
Klaviyo bills on everyone it can email, including shoppers who checked out without opting in, and since 18 February 2025 your plan must cover that count.
Our fix: A sunset flow, and suppression of profiles with no engagement in 180 days or more. Suppressed profiles leave the billable count, and many brands fall a tier. Klaviyo pricing, explained →
SMS costs extra, and works in 23 countries
Texts are billed per message on top of email. A text over 160 characters, or 70 with an emoji, bills as two or more, and MMS is not available in Europe or New Zealand.
Our fix: SMS only on the high-intent moments where it earns its cost, such as abandoned cart, kept inside 160 characters. Klaviyo SMS pricing →
Default attribution flatters email
Out of the box, any order within 5 days of an email open or click counts as email revenue, including opens fired automatically by Apple Mail Privacy Protection.
Our fix: Tighter windows, Apple Privacy opens excluded, and holdout tests on the big flows where volume allows. The number gets smaller and becomes one you can budget on. How Klaviyo attribution works →
The learning curve is real
One wrong “has not been in flow” filter can quietly stop active customers receiving flow email for months, and nothing errors.
Our fix: Every engagement starts with an audit of your flows, filters, segments and attribution settings, so silent leaks are found before anything new is built. Klaviyo consultant engagements →
Reporting stops at last touch
Standard accounts get last-touch attribution only. Linear attribution needs a paid Marketing Analytics or Advanced KDP subscription.
Our fix: Monthly reporting on revenue per recipient, flow contribution and email’s share of total store revenue.
Built for B2C, with category limits
Sales-led B2B teams need a sales CRM. Klaviyo’s acceptable use policy prohibits prescription and pharmaceutical products on every channel, and CBD and cannabis on SMS in the US and Canada.
Our fix: Separate B2B and B2C journeys where a brand sells both ways, as Popl does. For catalogues near the policy line, we check the product list against both Klaviyo’s and Omnisend’s policies, and get the platform’s sign-off in writing, before we build. When we build on Omnisend →
The full list, with pricing and who Klaviyo is wrong for, is in our honest Klaviyo review.
Why is Klaviyo so expensive?
Because the bill tracks the size of your database, not your revenue. As of October 2026 the email plan is $150 a month at 10,000 active profiles and $720 at 50,000, with SMS, WhatsApp and add-ons on top. Priced against revenue, it is one of the cheaper lines on the P&L: a store doing $2M a year with email at 35% of revenue moves $700K through a platform that costs $720 a month at 50,000 profiles. Clean the list before you blame the price. The full breakdown is in our Klaviyo pricing guide.
Sources (checked October 2026): Klaviyo Help Center, billing and active profiles, February 2025 billing changes, where Klaviyo SMS is available, default attribution settings and attribution model types; Klaviyo pricing (1 October 2026); Klaviyo’s acceptable use policy (updated 9 April 2026).
We're Klaviyo specialists. That's the point.
Founder Pete Devkota came from aeronautical engineering before email, which is exactly why the program is built like a system with tolerances and instrumentation. Meet the senior Klaviyo experts behind $250M+ in attributed revenue, read the origin story, or watch Pete explain the method behind our BFCM playbook on the Checkout Champ podcast.
Built by an engineer
Pete left designing flight-control systems for the inbox because it’s the same job: small adjustments compound into massive outcomes. That mindset is the whole brand, not a tagline.
Specialist focus
We don’t manage ads, build sites, or run Google. Everyone here specialises in Klaviyo and Omnisend, and nothing else. Depth beats breadth on a platform this deep.
Ecommerce is our only vertical
Product brands only. The flows, segments, and campaigns are built for purchase behaviour, not lead gen.
Revenue-first, no set-and-forget
We report in revenue per recipient and flow contribution, and we test and strip every flow every month. Email is a compounding asset, not a one-time project.
What it costs. Real numbers, not “book a call.”
Almost every agency hides pricing behind a sales call. These are our published prices in USD, the same ones on our pricing page. Projects and retainers, never hourly. No revenue-share games, no long lock-ins, and you keep full owner access to your own Klaviyo account, start to finish.
Free
Klaviyo audit
No commitment
An honest read on your program before you commit to anything bigger.
- Revenue gap analysis with estimated impact
- Flow architecture and deliverability review (SPF, DKIM, DMARC, sender reputation)
- Segmentation depth check
- Written 90-day roadmap within 24 hours of access
$3-15K
Project
Fixed scope, single fee
One defined outcome, typically delivered in 1 to 6 weeks.
- Klaviyo account setup and architecture
- Migration from another platform, done for you
- Flow library rebuild (10+ ecommerce flows)
- Deliverability fix and authentication audit
$3-12K/mo
Full management retainer
Typical range · month-to-month, 30-day notice
For brands at $500K+ a year who want the whole program run for them.
- Email and SMS program, owned end to end
- Monthly campaign calendar and execution
- Flow optimisation, split testing and segmentation
- Deliverability monitoring and maintenance
- Monthly reporting: RPR, flow contribution, list growth
- Weekly check-ins, a dedicated Slack channel and quarterly reviews
Klaviyo’s own subscription is billed separately, by Klaviyo. The free audit comes back with a specific scope and price within 24 hours, so you are never guessing. Comparing quotes? Our guide to how much an email marketing agency costs breaks down every pricing model, including the ones we don't use.
See full pricingWhere we work.
One team, headquartered in Adelaide, working with ecommerce brands in three markets. Here is how the hours, calls and Slack work in each.
| Market | Time-zone coverage | Calls and Slack | Read next |
|---|---|---|---|
| United States | The US business day: Adelaide HQ plus West Coast-based team members | Calls booked in your time zone. Slack answered inside the US business day. | How we work with US brands This page |
| United Kingdom | Your morning, which is our afternoon and evening. No UK office. | Calls in your morning. Drafts, flow builds and reports are finished in our day, ready at the start of yours. | Best Klaviyo agencies in the UK |
| Australia | Australian business hours (ACST and AEST), from our Adelaide HQ | Calls and Slack inside your business day. | Best Klaviyo agencies in Australia |
Every retainer includes weekly check-ins and a dedicated Slack channel, whichever market you sell in.
A Klaviyo agency for US ecommerce brands.
Selling in the United States changes three things: the clock, the calendar and the rulebook. We run US accounts from our Adelaide HQ, with calls booked in your time zone and Slack answered inside the US business day. Two of the three brands in the receipts above are American: Relaxium, an INC 5000 supplements brand where email and SMS added $3M in incremental annual revenue, and Popl, which went from under 20% to 50–60% of revenue from email and SMS over 21 months.
The clock
The contiguous US spans four time zones. A national campaign sent at 9am Eastern lands at 6am Pacific, under everything that arrived overnight. We schedule campaigns in each subscriber’s local time zone, which Klaviyo supports natively, and keep texts inside local daytime hours.
The calendar
We plan around the American retail year: Memorial Day, July 4th, Labor Day, BFCM and Cyber Week, and the December shipping cut-offs. Our BFCM playbook opens an early sale to segmented VIPs 30 to 45 days before the weekend, not the week of.
The SMS rulebook
The TCPA and the wireless industry’s CTIA guidelines govern US texting: written consent before the first marketing text, a clear way to opt out, and no texts before 8am or after 9pm in the recipient’s time zone. Some states go further. Florida’s mini-TCPA stops texts at 8pm, and Texas allows them from 9am Monday to Saturday and from noon on Sunday, until 9pm. Under the TCPA, statutory damages start at $500 per message and can reach $1,500 if the violation is willful or knowing. Toll-free sending numbers must be verified before you send (Klaviyo quotes 2 to 5 business days), and Klaviyo SMS covers the 50 states only, not Puerto Rico or other territories.
The email rulebook
CAN-SPAM requires a valid physical postal address in every commercial email, opt-outs honoured within 10 business days, and accurate From lines and subject lines. The CCPA, as amended by the CPRA, gives California residents the right to know, delete, correct and opt out of the sale or sharing of their data.
We build Klaviyo’s consent capture, quiet hours and footers to these rules, and flag the calls your counsel should sign off on. We are not your lawyers, and we will say so. See how we run compliant Klaviyo SMS, or, if SMS is the only channel you want help with, compare the best SMS marketing agencies. Comparing US agencies? Our ranking of the best Klaviyo agencies in the USA shows where we fit and where another agency fits better.
Sources (checked October 2026): Klaviyo Help Center, US SMS compliance laws, text message quiet hours, toll-free number verification, campaign send options; 47 U.S.C. § 227(b)(3) (TCPA damages); FTC, CAN-SPAM compliance guide; California Attorney General, CCPA.
Klaviyo agency by location and role.
Same team behind every page, different starting points depending on what you're looking for. The regional rankings name the other agencies worth a call, and say where we are not the right fit.
REGION 01 / AU
REGION 02 / US · UK
ROLE / By role & engagement
Klaviyo email marketing by industry.
We are an ecommerce email marketing agency: product brands only, no lead gen. Every category has its own reorder cycle, compliance limits and flow set, so each playbook below covers the flows, segments and rules for that vertical.
What clients radio in.
Verbatim.
Real results from real brands, in their own words. Auto-scrolling because there are too many to fit.
FAQ
Q.01 What does a Klaviyo email marketing agency do? +
/ Answer
A Klaviyo email marketing agency builds, runs and optimises your email and SMS program inside Klaviyo, with one goal: a bigger, more reliable share of revenue from your own list. That means deliverability and authentication, the automated flows (welcome, abandoned cart, browse, post-purchase, win-back), segmentation, campaigns, SMS, and monthly reporting in revenue per recipient and flow contribution rather than open rates.
Q.02 What Klaviyo agency services do you offer? +
/ Answer
Klaviyo setup and migration, flow automation, campaign management, list growth, email deliverability, and SMS marketing, delivered as a free audit, fixed-scope projects, or an ongoing management retainer. We work on Klaviyo (and Omnisend, where it fits a brand better), and only for ecommerce and DTC brands. No ads, no websites, no Google campaigns.
Q.03 Are you a Klaviyo partner? +
/ Answer
Yes. We are an official Klaviyo partner working only with ecommerce and DTC brands, and you can verify any agency’s partner status in Klaviyo’s directory at connect.klaviyo.com. Tier is one filter, but on its own it tells you little. What actually predicts results is specialist depth, named client work, and demonstrated revenue. That is where we would rather be judged. If you are comparing partners, here is how Klaviyo partner tiers and the directory work.
Q.04 Do you audit the account before you start? +
/ Answer
Always. We never pitch template flows before we understand your data. Every engagement starts with a full audit of your flows, segments, deliverability, and revenue attribution, so the plan is built on your numbers, not a playbook we reuse.
Q.05 Who actually does the work, the people who pitched me? +
/ Answer
Yes. A senior team led by founder Pete Devkota scopes your account, and the same team runs it. No bait-and-switch to a junior pool. You get a dedicated Klaviyo specialist, not a rotating account manager juggling twenty logos.
Q.06 What does your deliverability process look like? +
/ Answer
SPF, DKIM and DMARC authentication, domain warm-up, list hygiene, and ongoing inbox-placement monitoring. Roughly one in six marketing emails never reaches the inbox industry-wide. Most "email revenue problems" are actually deliverability problems, and this is where we find the fastest wins.
Q.07 How do you report, and do I keep control of my account? +
/ Answer
You keep full owner access to your own Klaviyo account, always. Reporting is monthly and revenue-first: flow revenue, revenue per recipient, campaign RPR, list growth, deliverability, and next-month priorities. No black boxes, no vanity metrics.
Q.08 Do you do SMS and multichannel? +
/ Answer
Yes. Klaviyo SMS setup, compliant opt-in flows, and integrated email + SMS sequences. The two channels compound when they’re built together instead of bolted on.
Q.09 How fast is onboarding? +
/ Answer
New Klaviyo setups are typically live within 2 weeks. For existing accounts, we begin flow and deliverability work in week one, because the fastest revenue is usually the revenue you’re already leaking.
Q.10 What does it cost, and are there contracts? +
/ Answer
Three engagement types, no revenue-share games and no long lock-ins. The audit is free. Fixed-scope projects (setup, migration, flow rebuild, deliverability fix) run $3-15K USD depending on scope. Full management retainers are typically $3-12K USD a month for ecommerce brands, month-to-month with 30 days’ notice. We sell projects and retainers, not hours. The free audit comes back with specific scope and pricing within 24 hours, and our pricing page lists what each engagement includes. Klaviyo’s own subscription is billed separately.
Q.11 What are the weaknesses of Klaviyo? +
/ Answer
Six worth knowing before you commit. Cost scales with active profiles, including people who bought without subscribing, and since February 2025 your plan must cover that count. SMS is billed per message on top of email and works in 23 countries. Default attribution credits any order within 5 days of an email open, including automatic Apple Mail Privacy opens, so it overstates email’s share if left alone. The learning curve is real once you move past basic flows. Standard reporting is last-touch only, with linear attribution behind a paid add-on. And it is built for B2C ecommerce, so sales-led B2B teams need a separate CRM, and some categories are restricted: prescription and pharmaceutical products are prohibited on every channel, and CBD and cannabis are prohibited on SMS in the US and Canada. All six can be managed, and managing them is most of what a good Klaviyo agency does.
Q.12 Why is Klaviyo so expensive? +
/ Answer
Because Klaviyo bills on active profiles, meaning everyone it can email regardless of consent status, not just the people you actually email. Since 18 February 2025 your plan must cover that count, and if you go over, Klaviyo upgrades you automatically at the next billing cycle. As of October 2026 the email plan is $20 a month at 500 profiles and $150 at 10,000, with SMS, WhatsApp and add-ons such as Marketing Analytics billed on top. The fastest fix is a sunset flow and suppressing profiles that have not engaged in six months or more. Suppressed profiles drop out of the billable count, many brands fall a tier, and deliverability improves at the same time.
Q.13 Is Klaviyo legit? +
/ Answer
Yes. Klaviyo is a publicly traded company (NYSE: KVYO) headquartered in Boston, founded in 2012, and reported more than 205,000 customers as of 30 June 2026. It is one of the most widely used email and SMS platforms for ecommerce, with native integrations for Shopify, WooCommerce, BigCommerce and Magento.
Q.14 Who owns Klaviyo? +
/ Answer
Klaviyo is a public company listed on the New York Stock Exchange under the ticker KVYO since its September 2023 IPO, so it is owned by its shareholders. It was founded in 2012 by Andrew Bialecki and Ed Hallen and is headquartered in Boston.
Q.15 Klaviyo or Mailchimp: which is better for ecommerce? +
/ Answer
For an ecommerce store that wants email and SMS to drive repeat purchases, Klaviyo. Every order, product view and checkout lands on one customer profile, and its flows and segments can use all of it. Mailchimp is easier to learn and usually cheaper for newsletters, service businesses and small lists: as of October 2026, Mailchimp Standard is $135 a month at 10,000 contacts against $150 for Klaviyo’s email plan. The deciding question is whether email is a revenue channel or a broadcast channel for you.
Q.16 What percentage of revenue should email drive? +
/ Answer
Our target for a well-run DTC account on Klaviyo is 30-40% of revenue from email and SMS. That is our working target, not an industry standard: the right share depends on your category, how often customers reorder and how much you spend on paid acquisition. If you are well under it, the gap is your opportunity, and it is usually the first thing our audit quantifies.
See exactly what your Klaviyo should be doing.
Free Klaviyo audit. We measure your lift, thrust, drag, and weight, tell you the dollar figure you're leaving on the table, and send a written 90-day rebuild plan within 24 hours. Whether you hire us or not.
Or read the manifesto →/ Free Audit
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