Six years. £12m+ generated. 15× average ROI. Klaviyo Silver Master.
Most Klaviyo accounts run at a fraction of what they should.
Flows that never trigger. Segments that haven't been touched in a year. Campaigns that look fine on a Tuesday morning and quietly lose money the rest of the week. We find the leaks, close them, and turn Klaviyo into a predictable revenue line — not a job nobody wants to own.
What we do
• Full account management — strategy, campaigns, flows, SMS, list growth, deliverability. End to end, so nothing falls through the cracks.
• Implementation & migration — moving from Mailchimp, Klaviyo Classic, or any legacy ESP. Standing up a new account the way it should have been built in the first place.
• Deliverability rescues — domain auth, list hygiene, engagement mix. Diagnose, fix, hold the line.
• Strategy & consulting — sharper direction for in-house teams that want expert input without hiring another vendor.
Why us
Klaviyo is what we do. Nothing else. We're a certified Klaviyo Silver Master partner, and six years in we've generated £12m+ for ecommerce brands at an average 15× ROI. Small team, senior operators, no hand-offs to juniors.
Who we work with
Ecommerce brands doing $1M–$10M who've outgrown DIY email — usually post-first-hire, usually Shopify, usually stuck between “we know there's more here” and “but we don't have the bandwidth to find it.” Strong fits: apparel & beauty, food & beverage, subscriptions, pet, outdoor.
What good looks like
Klaviyo driving 25–40% of revenue. Predictable monthly numbers. Flows pulling their weight. Deliverability you don't have to think about. A programme your team is proud of, not apologising for.
How to start
Book a 30-minute audit call. We'll walk your account together and show you where the easy revenue is — whether or not you end up working with us.
"Sendonomics was referred to me by my copywriter, to help implement a retargeting email automation for site visitors. From our first call I knew he was going to make the process very easy for me. There were a few parts of the project that were quite technical and these were swiftly taken care of with"