Most Klaviyo agencies decorate. We engineer.
Email Optimize was founded by an aeronautical engineer and runs your Klaviyo account like a revenue system, not an art gallery. We've engineered $250M+ in attributed email & SMS revenue across 800+ DTC brands, mostly by removing the drag other agencies charge you to add. The goal is simple: make email and SMS 30–40% of your revenue.
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Trusted by
700+ brands
— Sheet 01 / The numbers
SPEC.01
$250M+
attributed email + SMS revenue
SPEC.02
800+
DTC brands engineered
SPEC.03
Partner
official Klaviyo partner agency
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 campaign 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 5.3% and calling it a strategy. A heavily designed email takes ~30 hours to produce. A stripped-down, conversion-engineered one takes ~4. The agency selling you the 30-hour version is selling you their utilisation rate, not your revenue.
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).
Three brands. Receipts.
Selected from 800+ engagements. The brief, the intervention, the number that moved.
Better Body Co.
— Health & Supplements
SGD year-end 2021
— 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
Full-stack Klaviyo, nothing else.
No Facebook ads, no websites, no Google campaigns. Every service is Klaviyo-native and ecommerce-specific, built by people who only do this.
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. The 5% of sends that drive ~41% of the revenue.
Campaign Management
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.
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
Most ecommerce email agencies sell you 30 hours of design work per email and call the result "elevated content." We sell you 4 hours of engineered email that 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 30 hours of design work (it's billable)
- 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 4 hours of engineering, not 30 hours of decoration
- What you get Email = 30–50% of total ecommerce revenue
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 manifestoWe only do Klaviyo. 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, or read the origin story.
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.
Klaviyo-only focus
We don’t manage ads, build sites, or run Google. Every person here is a Klaviyo specialist. 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.
No revenue-share games. No black boxes.
Almost every agency hides pricing behind "book a call." Here's the honest version. We work on clear-scope projects and retainers, with no long lock-ins and no revenue-share with a hidden floor. You keep full owner access to your own Klaviyo account, start to finish.
- SMALLER STORES Project builds and lighter retainers to get the flows and deliverability right.
- MID-MARKET Full-program retainers: flows, campaigns, SMS, and monthly optimisation.
- SCALING BRANDS Embedded retention leadership, the model we run on accounts like Relaxium.
Klaviyo agency by location and role.
Same team across all of them, different starting points depending on what you're looking for.
REGION 01 / AU
REGION 02 / US
— By role & engagement
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 Are you a Klaviyo partner? +
— Answer
Yes. We are a Klaviyo partner working exclusively 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.
Q.02 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.03 Who actually does the work, the people who pitched me? +
— Answer
Yes. The senior team that scopes your account is the team that 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.04 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.05 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.06 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.07 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.08 What does it cost, and are there contracts? +
— Answer
We work on project and retainer bases with clear scope, no revenue-share games and no long lock-ins. Good Klaviyo work generally runs in the low-to-mid four figures a month for smaller stores and higher for mid-market. See our pricing page for how each tier maps to your stage.
Q.09 What percentage of revenue should email drive? +
— Answer
For a Klaviyo store run properly, email and SMS should be roughly 30–40% of total revenue. If you’re well under that, the gap is your opportunity, and it’s 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
Get your free Klaviyo audit
Drop your store URL and email. We'll review your Klaviyo account and send a written 90-day revenue roadmap within 24 hours. No obligation.