Contact Engage Commerce


We believe that every business is unique. So there's no form here that vanishes into a queue: two routes in, one desk.

Theo TziapourasFounder and strategyNo switchboard, no ticket number and nobody working through a script.
Pick whichever suits you, they both land on the same desk
Straight into the diary, no back and forth. We'll open your account together and name the first fix.
Goes into the diary
Best when you want a straight answer before you commit to a slot. Leave a number and you'll get a call back.
Answered by a personOr write it down and we'll read it properly
Your name and a way to reply are all we need. The rest just saves us a round trip.
Every brand that rings us has a different problem, even the ones selling the same thing to the same people. So the first conversation is a diagnosis, not a pitch.
The details your finance team will ask for
- Registered name
- Cornerstone Marketing Group LTD
- Trading as
- Engage Commerce
- Company number
- 15190663
- Jurisdiction
- England and Wales, per our terms of service
- Trading since
- 2020
- Telephone
- 0330 1222 445
- Book
- Book a growth consultation
- Engagement terms
- Thirty-day rolling, no lengthy contracts
- Partner status
- Official Klaviyo Partner and Shopify Partner
- Your data
- Handled per our privacy policy




and many moreFAQs

What is the quickest way to reach Engage Commerce?
Book a growth consultation. It goes straight into the diary and skips the back and forth entirely. If you'd rather speak first, ring 0330 1222 445, and if you'd rather write it down, use the pad on this page.
Where does my message actually land?
On the same desk as the other two routes. No ticket number, no automated nurture sequence, no junior working through a script. Nothing sits waiting to be triaged by somebody who couldn't answer it anyway.
Who will I actually be speaking to?
Theo Tziapouras, who runs strategy. The people who plan the work are the people in the consultation. There's no business development layer to be handed over from.
Do I need to prepare anything before we speak?
No deck and no data room. Have your store URL to hand and a rough idea of what you've already tried. Everything else we can look at together.
Do you work with brands doing under seven figures?
Our systems are built for 7-8 figure DTC brands, where a small percentage improvement is worth real money. Earlier than that? Start with the free playbooks on the resources page. They'll do more for you right now than a retainer would.
Am I tied into a long contract?
No. Thirty-day rolling. We think long contracts are a red flag, so we earn the next month every month, and anything we build stays in your account if you go.
Do you only do email marketing?
We started as an email shop in 2020 and email's still the backbone. We're a retention agency now: email marketing, subscriptions and loyalty, WhatsApp and SMS, direct mail and the lifecycle strategy that sequences all of it. One programme, one team, judged on the revenue it brings back.
Tell us what isn't working and we'll look under the hood
Bring what you've tried, what worked and what didn't. In your growth consultation we'll show you where the revenue's leaking.


Half an hour with Theo, our founder.
We're all about relationships built on trust, mutual respect and a shared vision for success. If that sounds like your vibe, let's make some waves together 🌊



