Email marketing agency · campaigns, automation & Klaviyo
Turn your list into revenue
Every other channel rents you attention; your email list is the audience you own. We write, design, test and send the campaigns, and build the automations that sell while you sleep, on Klaviyo, GoHighLevel and Kit, measured in the only metric that matters: revenue per send.
What email looks like when it's done properly
Most lists are under-mailed, badly mailed, or both. Here's what happens when someone treats yours like the asset it is.
The Sunshine Co
Premium tanning studios across the South East, with courses and products to sell to people who already love them. Welcome, win-back and offer flows built around each studio, so the list does the selling between visits.
PoolBar London
A Palm Springs-inspired sun care brand launching into a crowded beauty market. Paid social that grew the list fast, and email that turned first-time buyers into repeat ones.
What we'll get you, and how
Email splits into two things: campaigns you send when it matters, and automations that send themselves. Everything else here, copy, design, deliverability, segmentation, is what makes both actually earn.
Sends that pay for themselves
Launches, offers, news and newsletters: written, designed, tested and sent for you. From text-led personal emails that read like a note, to fully designed campaigns built from scratch in your brand, never a template with your logo swapped in.
Revenue while you sleep
Welcome series, abandoned cart, post-purchase, win-back: automations trigger themselves at exactly the right moment, forever. Built once, they become the most profitable emails you send, without you sending anything.
Words that get opened
The best design on earth dies unopened. We write subject lines to be opened and copy to be acted on, then test them against each other so opinion never beats evidence.
Your brand, beautiful in every inbox
Every email is designed from scratch and then battle-tested: dark mode, accessibility, and every major email client, because an email that breaks on iPhones at night is money quietly lost.
The inbox, not the spam folder
None of this matters if you land in junk. We set up your sending domain properly, warm it up, validate your list and spam-test before anything goes out, the unglamorous work most agencies skip.
The right message to the right people
Your VIPs, your browsers and your gone-quiet customers shouldn't get the same email. We segment your list and tailor what each group receives, which is exactly why they keep opening.
Revenue per send, in plain sight
Opens and clicks are nice; orders and enquiries pay wages. Every campaign and every flow is tracked to the revenue it made, and that's the number your monthly report leads with.
What you get, and how we work
Email is the highest-return channel in marketing and the most neglected. Here's how we run it next to what usually happens.
How we run your email marketing
Good email is a rhythm, not a scramble. Here's how yours runs, step by step, from setup to send to sale.
Audit and discovery
We start by understanding your business, your goals and your current position, before a penny gets spent.
- Existing campaigns audited thoroughly before we touch anything
- List validated, domain set up and warm-up started, in 2 to 3 working days
- Honest advice on whether your budget fits your goals
- Quick wins identified and flagged from day one
Strategy and setup
A campaign structure built around your goals, not around what's easiest to manage.
- A calendar of sends planned around your launches, seasons and stock
- Conversion tracking set up properly, so every click, call and sale counts
- Landing pages reviewed, because clicks mean nothing without conversions
- You see and approve the strategy before we spend anything
Careful launch
Campaigns go live under close watch, with adjustments made as the data comes in.
- Close monitoring through the critical early days
- The warm-up managed properly, so early sends build reputation instead of burning it
- Early signals acted on fast, good and bad
- Clear communication about what's happening and why
Ongoing optimisation
This is where most agencies go quiet, and where we do our best work, week after week.
- Campaigns written, designed and tested on schedule
- The send calendar managed and kept to, month after month
- Continuous A/B testing of subject lines, content and send times
- Revenue per send pushed in the right direction, month on month
Reporting and reviews
Every month, a clear report that connects your email marketing directly to business outcomes.
- Revenue per send, orders and enquiries, in plain English
- What we did, what it changed and what's next
- Regular consultancy calls with the person managing your account
- A live marketing dashboard you can check any time
Your platform, mastered
We work primarily in Klaviyo, GoHighLevel and Kit, and adapt to most major platforms beyond them. Whichever it is, the account, the list and everything we build in it stays yours.
The flows that earn while you sleep
An automation is simple: a trigger, a few perfectly timed emails, and a payoff, running by itself, forever. Here are twelve we build again and again, and most businesses are running two of them at best. Slide through and count what you're missing.
Welcome series
Your best first impression, sent to every new subscriber automatically: who you are, why people love you, the easiest first step.
Abandoned cart
Most carts are abandoned; most are recoverable. A well-timed reminder, the product they left, and the review that settles it.
Browse abandonment
They looked twice and left. A soft nudge with the exact product they viewed, before they buy it somewhere else.
Post-purchase
The sale isn't the end, it's the beginning. Thank them, help them love it, then show them what goes with it.
Lead nurture
Every enquiry followed up, every time, without anyone remembering to. Warm, helpful, impossible to slip through the cracks.
Quote follow-up
You sent the quote; they went quiet. A polite, well-timed chase that wins the jobs your competitors forgot to follow up.
Win-back
Customers drift; a good flow notices. When someone's gone quiet, they get a reason to come back before they're gone for good.
Reviews & referrals
Happy customers become your marketing, if you ask at the right moment. Reviews when delight peaks, referrals rewarded honestly.
Back in stock
Sold out shouldn't mean sale lost. The moment it's back, everyone who wanted it knows, and the fastest fingers win.
Replenishment
For anything that runs out: coffee, skincare, supplements, filters. A reminder timed to the day they'll need more.
VIP & loyalty
Your best customers should feel it. Early access, first looks and thank-yous reserved for the people who spend the most.
Birthday & occasions
A little delight on the right day. Birthdays, anniversaries and milestones, remembered automatically, rewarded personally.
Pay per email, or plan monthly
No retainer required to start: buy a single campaign and see how we work. When email becomes your channel, the plans take over.
One-off campaigns carry a £99 one-time setup for new clients, covering list validation, domain & DNS checks and warm-up.
Every plan begins with the free email marketing audit, so you start with a strategy, not a subscription.
Start with the free audit ↓All prices exclude VAT · Pricing correct as of July 2026 · Your list and platform account always remain yours
Get a free email marketing audit and plan
Most businesses are sitting on revenue: a list that's under-mailed, flows that were never built, and sends going to spam without anyone noticing. We'll audit your list, your platform and your current emails, benchmark you against your industry, and hand you a plan for what email could be earning, whether you run it with us or not.
- List health checked: engaged, lapsed and at-risk
- Deliverability and domain setup reviewed
- Missing automations identified, with what each is worth
- No cost, no obligation, no hard sell
Why businesses trust us with their list
A few honest reasons clients choose us, and stay with us.
You speak to the person sending your emails
No account managers relaying messages. Your specialist writes the copy, plans the calendar and answers your questions, one person who knows your audience properly.
The whole job, genuinely
Strategy, copy, design, build, testing, the send and the report. Plenty of agencies do some of it; the value is in one team doing all of it, consistently.
Designed from scratch, tested to death
Never a template with your logo swapped in. Every email is built for your brand, then checked in dark mode, on every device, before it goes near your list.
Platform experts, not platform prisoners
Klaviyo, GoHighLevel and Kit are home turf, and your account and list are always yours. We build value you keep, not dependence on us.
What our clients say about working with us
Sarah Aspinall
Breaking Ballet
“We have seen great work from the team at designbox. From WordPress development to liaising with our in-house and remote dev teams, to paid search, the results have been great. I would highly recommend them.”
Kim Waller
Lick Library
“I have been working with designbox for the past two years and have always had exceptional customer service and support. We used them initially to redesign our website. The work is always delivered to the highest standard and the team are fantastic. Highly recommend.”
Emily Bryant
Amberjack
Nicole Osborne
Wunderstars
“Great hands-on service from start to finish. From idea generation, logo and branding through to a functioning website, the team were always on hand with suggestions and high quality implementation. Would happily recommend to all.”
Richard Combs
Intrinsic Capital
“designbox have been brilliant in supporting us in both marketing and web development. The team have been reliable and efficient in everything they have done for us.”
Esther Smith
Battlesbridge Horse & Country
Tommie Hession-Harris
Player Path
“designbox have been a huge support for me and my business for the past five years. Their up-to-date knowledge of digital design, marketing and the tech industry itself is fantastic, and I would recommend them to anyone.”
Samantha Wells
Tern Heads
“We’re absolutely delighted with the service we receive from designbox, who manage my website and SEO among other things. They have helped us to grow the business over the last few years with a website to be proud of and a steady stream of new clients. Would highly recommend.”
Penny Hawker
CHC Aesthetics
Dale Harris
Greenoaks
“Very helpful and professional company with some of the most friendly and talented staff I’ve met. They made us a beautiful website and have been cooperative with any assistance that we’ve needed since. Would highly recommend!”
Danny Whitefoord
Chiltern Co
“We have been working with Brandon and the team for the last few years and are very happy with their work. Brandon is very responsive and easy to work with.”
Tom Billings
Beach Equity
Kirsty Pile
KA Naturals
“Excellent service, highly professional staff who are all more than happy to give an extensive insight into online marketing campaigns in a digestible, understandable presentation. We have since moved all of my online marketing over to designbox across multiple companies.”
Robert Foster-Jones
Sunshine Co
“designbox completely saved my website and have created a completely unique website tailored to my needs. The support is second to none, nothing is ever too much to ask, and they go above and beyond to provide solutions or meet my design requirements. I have had nothing but great feedback from customers and the team are always at the end of the phone if we have any queries.”
Daisy Lethbridge
Mermaids Swimwear
Email works even harder alongside
Email is the multiplier on everything else. Because everything at designbox is in-house, the channels that win you customers and the emails that keep them are run by one team, as one system.
Ecommerce SEO
Organic search grows the list; email turns it into repeat revenue. Stores get their own dedicated service.
Ecommerce SEO →
Meta ads
Feed the list: lead ads and campaigns that turn scrollers into subscribers you can sell to for free.
Meta ads →
Google Ads
Catch the demand, capture the email, keep the customer. Paid search and email compound together.
Google Ads →
Web design
Signup forms, pop-ups and landing pages that actually grow the list, built into sites that convert.
Web design →
SEO
Be found by new customers while email keeps the ones you've won coming back.
SEO services →
AI automation
Connect email to the rest of your business: CRM, follow-ups and workflows that run themselves.
AI automation →One team, one plan, built around your business
The services above aren't a menu you have to work out alone. Tell us what you're trying to achieve and you get a dedicated team across every channel, working to one plan built for your business: strategy, delivery and reporting handled, like a marketing department of your own.
Email marketing, explained properly
Email marketing FAQs
Can't see yours? Ask us anything on a quick call, no obligation.
What's the difference between a basic and a designed email campaign?
Do you write the copy as well as design?
Which email platforms do you work with?
Are automations included in the plans?
How often should we email our list?
Won't emailing more annoy our customers?
Is our email marketing GDPR compliant?
How quickly does email marketing show results?
Why choose designbox for email marketing?
How should we compare email marketing agencies?
Email marketing at designbox
designbox is an email marketing agency based in Southend-on-Sea, Essex, running campaigns and automation for businesses across the UK. Our email marketing services cover the whole job: strategy and send calendars, copy and subject lines, emails designed from scratch in your brand, segmentation, A/B testing, and the deliverability groundwork, domain setup, warm-up and spam testing, that decides whether any of it lands.
We work primarily in Klaviyo, GoHighLevel and Kit, building the automated flows, welcome, abandoned cart, post-purchase and win-back, that keep earning long after they're built, and reporting everything in revenue per send. We work across Klaviyo, GoHighLevel and Kit, and email works hardest alongside the channels that grow the list: Meta ads building tomorrow's audience, Google Shopping winning the first order, and automations quietly earning every one after it.
designbox is a Google Partner managing over £2m of advertising spend a year, Cyber Essentials certified, with everything delivered by our own in-house team in Essex, nothing outsourced, nothing white-labelled. Every engagement is measured in revenue and enquiries rather than vanity metrics, reported in plain English every month, and most of our clients arrive by referral and stay for years.
Ready to own your audience?
Tell us about your business and we'll come back with honest advice and a realistic figure, usually within one working day.
