Email marketing agency London
Email marketing agency for flows, campaigns and repeat sales
Automated flows, campaigns and segmentation built in Klaviyo, Mailchimp or HubSpot, with deliverability fixed first so your emails reach the inbox. Rolling monthly plans.
- Deliverability fixed before sending
- Klaviyo, Mailchimp and HubSpot
- You keep the list
Quick answer
ProntX is a London email marketing agency for UK ecommerce, service and B2B businesses. We build welcome, abandoned cart, post-purchase and win-back flows, run segmented campaigns and fix deliverability with SPF, DKIM and DMARC on Klaviyo, Mailchimp or HubSpot. Outsourced email marketing starts from £450 a month on rolling terms.
Email marketing
What does an email marketing agency do for your business?
An email marketing agency builds the automated flows and regular campaigns that turn subscribers into customers and customers into repeat buyers, and keeps your emails out of the spam folder.
ProntX is an email marketing agency in London for UK ecommerce brands, service businesses and B2B companies. We build automated flows, write and send campaigns, segment your list and fix deliverability on Klaviyo, Mailchimp or HubSpot. Outsourced email marketing starts from £450 a month.
Email is the one marketing channel you fully own. Social reach can disappear with an algorithm change and ad costs rise every year, but your list is yours, and sending to it costs very little. That makes it one of the most profitable channels for almost any business with repeat customers.
The trouble is that most lists are under-used. A welcome email set up years ago, a newsletter when someone remembers, and a mass discount blast at Black Friday. No abandoned cart flow, no segmentation, and nobody has checked whether half the emails are landing in spam.
Our managed email marketing fixes that in a set order. First deliverability, so emails reach the inbox. Then the automated flows that run every day without anyone touching them. Then a regular campaign calendar, written and designed for segments rather than the whole list.
We work inside your own platform account, so the list, templates and data always stay with you.
Automated flows
Which email flows should every business have?
Five core flows do most of the work: welcome, abandoned cart, browse abandonment, post-purchase and win-back. Once built, they send to the right person at the right moment, every day.
Flow 1
Welcome series
Three to five emails that introduce your brand, explain what makes you different, answer common objections and deliver any sign-up offer. Split by whether the subscriber has already bought.
Flow 2
Abandoned cart
A reminder within hours of a cart being left, followed by reassurance on delivery, returns and reviews. Incentives are used carefully, so customers are not trained to abandon carts to get a discount.
Flow 3
Browse abandonment
Gentle follow-ups for known subscribers who viewed products or services but did not add to cart, showing what they looked at and related options.
Flow 4
Post-purchase
Order thanks, how-to and care content, review requests timed to delivery, cross-sell based on what was bought, and replenishment reminders for consumable products.
Flow 5
Win-back
Triggered when a customer has not bought for longer than usual for your products, with a sequence that tries a reason to return before eventually suppressing inactive contacts.
And more
Service and B2B flows
Lead nurture after an enquiry, quote follow-ups, appointment reminders, onboarding for new clients and renewal reminders, for businesses that do not sell through a basket.
Campaigns and segments
How do we plan email campaigns and segmentation?
We plan a monthly campaign calendar, then send each email to the segments it suits rather than the whole list. Better targeting means fewer unsubscribes and better inbox placement.
A campaign calendar you approve
Each month we propose a calendar of campaigns: new products, stories, guides, seasonal moments, offers and newsletters. You approve the plan, then we write, design, build and test each email, and send it once you have signed it off.
Copy and design that suit the inbox
Short subject lines that say what is inside, preview text that adds to them, mobile-first layouts, live text rather than giant images, and one clear call to action. Templates are built in your platform’s editor so your team can reuse them.
Segments that change what people receive
- Engagement: active, cooling and lapsed subscribers
- Purchase history: first-time, repeat and VIP customers
- Predicted behaviour such as likely next order date
- Product or category interest from browsing and orders
- Location, for UK store events or delivery cut-offs
- Lead stage and job role for B2B lists
Deliverability
How do you make sure emails reach the inbox?
By authenticating your domain with SPF, DKIM and DMARC, sending only to people who engage, and watching spam complaint rates closely. Google and Yahoo now enforce these standards for bulk senders.
Authentication
SPF, DKIM and DMARC
We set up SPF and DKIM for your sending platform, publish a DMARC record and move it towards enforcement once reports confirm legitimate mail passes. A branded sending domain replaces shared platform domains.
List health
Engagement-based sending
Unengaged contacts are moved to a sunset flow and then suppressed. Sending to people who never open drags down inbox placement for everyone else on your list.
Monitoring
Complaints and reputation
One-click unsubscribe in every marketing email, spam complaint rates tracked in Google Postmaster Tools, and new domains warmed up gradually rather than blasting the full list on day one.
Platforms and compliance
Which email platforms do you work with, and are you GDPR compliant?
We work in Klaviyo, Mailchimp and HubSpot most often, plus other major platforms. Every list, form and flow we build follows UK GDPR and PECR.
Klaviyo, Mailchimp or HubSpot
Klaviyo is usually the best fit for Shopify and WooCommerce shops, with deep product and order data for flows and segments. Mailchimp suits smaller lists and simpler newsletters. HubSpot suits B2B companies that want email, CRM and sales pipeline in one place. We also work with Omnisend, Brevo, ActiveCampaign and Dotdigital.
If you are on the wrong platform for your stage, we will say so and can migrate lists, templates and flows without losing consent records.
UK GDPR and PECR
Under PECR, you generally need clear consent to send marketing emails to individuals. The soft opt-in lets you email existing customers about similar products, provided they were given a chance to opt out when they bought and in every email since. Business contacts at corporate addresses follow different rules, but still need an easy way to unsubscribe.
We build sign-up forms with clear consent wording, keep records of when and how each contact opted in, honour unsubscribes immediately and never buy or rent lists for you.
Why ProntX
Why choose ProntX as your email marketing agency in the UK?
You get a full service email marketing agency that also builds websites and runs paid media, so email connects to every other channel instead of sitting on its own.
Email works better when the rest of your marketing feeds it. Our social media marketing team builds sign-up offers into content, our paid team can retarget people who clicked an email but did not buy, and our developers can add better sign-up forms and quizzes to your site.
For online shops, email and ecommerce PPC are planned together, so launches, sales and peak periods are coordinated rather than competing for the same customers. For B2B firms, we connect email to your CRM so sales can see who is engaging. Our ecommerce marketing page shows how the channels fit together.
- Your platform account, list and templates stay in your name
- Rolling monthly plans, no minimum term
- Flows built and tested before any campaigns are scaled up
- Revenue and lead reporting tied to GA4 and your platform
- Copywriting, design and build all handled in-house
Who it is for
Who uses our email marketing services agency?
Businesses with a list worth looking after and customers who can buy more than once: online shops, subscription brands, clinics, service firms and B2B companies.
Ecommerce
Online shops and DTC brands
Fashion, beauty, food and drink, home and gifting brands on Shopify or WooCommerce, where flows recover abandoned carts and campaigns drive repeat orders. If your product pages or sign-up forms need work, our ecommerce web design team can fix them.
Services
Clinics and local services
Appointment reminders, aftercare sequences, review requests and seasonal offers for clinics, dentists, salons, gyms and trades that rely on repeat visits and referrals.
B2B
B2B and professional firms
Lead nurture, webinar and event sequences, newsletters and account-based emails connected to HubSpot or your CRM. See how this fits into wider B2B marketing.
If you already have an in-house marketer, we can act as an email marketing consultant alongside them: auditing your account, building the flows and templates, and leaving them to run campaigns day to day. Many teams find that a better use of budget than hiring a specialist full time.
Pricing
How much does outsourced email marketing cost?
Our email marketing services start from £450 a month plus VAT. Your platform subscription (Klaviyo, Mailchimp or HubSpot) is paid directly by you.
| Plan | Monthly fee | Typical scope |
|---|---|---|
| Essentials | From £450 | Deliverability setup, core flows built and maintained, two campaigns a month, monthly report |
| Growth | Typically £750 to £1,200 | Weekly campaigns, advanced segmentation, A/B testing, flow expansion, sign-up form optimisation |
| Scale | Typically £1,400 and up | High send volume, SMS alongside email, multiple brands or regions, custom reporting |
Final price depends on list size, number of flows, campaign volume and platform. A one-off flow build can be quoted separately if you prefer to run campaigns in-house. See our pricing page for every service.
How it works
What happens after you get in touch
- 01Free audit
We review your site, search visibility, ads and competitors, then send a short video walkthrough with the quickest wins.
Request audit - 02Plan and price
A one-page plan with goals, channels, timeline and a fixed monthly price. No surprises later.
See prices - 03Launch in weeks
Tracking first, then quick wins, then the bigger builds. You see progress in the first month.
See our work - 04Report and grow
Monthly report in plain English: leads, sales, cost per result and what we do next.
Talk to us
FAQ
Email marketing questions, answered
Still unsure? Ask us anything. We reply within one working day.
How much does an email marketing agency cost in the UK?
Our email marketing services start from £450 a month plus VAT, covering deliverability setup, core flows and two campaigns a month. Growth plans with weekly campaigns and testing typically cost £750 to £1,200. Your email platform subscription is separate and paid directly by you. Final price depends on list size and volume.
Which email flows should I set up first?
For online shops, start with a welcome series and abandoned cart flow, because they reach people at the moment they are most interested. Then add post-purchase, browse abandonment and win-back. For service and B2B businesses, a lead nurture sequence after enquiry and a quote follow-up flow usually come first.
Should I use Klaviyo, Mailchimp or HubSpot?
Klaviyo is usually best for Shopify and WooCommerce shops because of its product and order data. Mailchimp suits smaller lists and simple newsletters. HubSpot suits B2B companies that want email and CRM together. We can recommend one based on your stage and migrate if you are on the wrong platform.
Why are my emails going to spam?
The usual causes are missing or misconfigured SPF, DKIM or DMARC records, sending to large numbers of unengaged contacts, high complaint rates, or using a shared sending domain. Google and Yahoo now require authentication and easy unsubscribes for bulk senders. We check all of these in the first weeks and fix them before scaling up sending.
Is email marketing GDPR compliant?
It can be, if done properly. Under UK GDPR and PECR you generally need consent to email individuals, with a soft opt-in for existing customers about similar products. We build compliant sign-up forms, record consent, honour unsubscribes immediately and never use bought lists. We are not lawyers, so complex cases should be checked with your adviser.
What is the difference between outsourced and managed email marketing?
They mean much the same thing: an agency takes responsibility for planning, writing, designing, building and sending your emails, and for maintaining flows and deliverability. Some businesses outsource only the flow build and run campaigns themselves. We offer both, and a one-off flow build can be quoted separately.
How long before email marketing makes money?
Core flows such as welcome and abandoned cart usually start producing sales as soon as they go live, typically within three to four weeks of starting. Campaign performance improves over two to three months as segments are refined and testing shows what your subscribers respond to.
Do you write the emails and design the templates?
Yes. Copywriting, design, template build, testing across devices and sending are all done in-house. Templates are built in your platform's editor so your team can reuse them. You approve every campaign before it goes out, and flows are reviewed with you before they are switched on.
Do I keep my email list if I leave?
Always. We work inside your own Klaviyo, Mailchimp or HubSpot account, so the list, consent records, templates, flows and reporting history all stay with you. Our plans are rolling monthly, and if you leave we hand over notes on every flow and segment we built.
Works well with
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