Email Marketing agencies in London.
Email Marketing is the discipline of earning revenue from owned audience data through lifecycle automation, segmentation, and CRM-driven campaigns. In 2026 it sits closer to retention and CRM than to broadcast newsletters, and the make-or-break metric is deliverability: SPF, DKIM, DMARC, and BIMI now decide whether a message reaches the inbox at all. This page shows every agency on AgencyIndex offering email marketing in London.
- 78 UK agencies offering email marketing in London
- Part of the Email Marketing service set
- Indexed in London
- Reviewed 17 May 2026
As a powerhouse of digital strategy, Mobikasa is composed of an assorted mix of strategists, creators, developers, scribes, directors, and producers, united by a cutting-edge philosophy. This multifaceted team collaboratively engineers pioneering digital solutions that resonate with global audiences. With an industry tenure exceeding a decade, Mobikasa's designs, underpinned by scientific insight,
Galexia Creative Agency, a creative hub, specialises in fostering the growth of start-ups. Our services span from customised WordPress website development to managing social media and optimising for SEO, all under the umbrella of superior project management. This not only eases the burden of running a start-up but also ensures its growth. At Galexia, our distinctive method concentrates on nurturin
The One Stop Marketing Ltd, a premier digital marketing agency situated in London, UK, is renowned for its distinct focus on augmenting brands' online footprint. Leveraging data-driven approaches, they enhance visibility and elevate market value. Providing a diverse array of digital marketing solutions, The One Stop Marketing Ltd guarantees personalised strategies that effectively amplify business
Pimento, a leading full-service UK-based agency, is celebrated for its extensive network of independent digital, marketing agencies, businesses, and consultants. Pimento's unique strength lies in its capacity to craft tailor-made teams that meticulously match the specific briefs of clients, utilising a wide talent base to fulfil diverse marketing, business, and technology requirements. Providing a
Climb Online is a forward-focused marketing agency dedicated to empowering the next generation of global brands. Following its acquisition by global digital group xDNA in 2022, the agency continues to champion ambition, innovation, proactivity, and inclusivity, equipping clients with a competitive edge in a constantly evolving marketplace. Operating from offices in London, Glasgow, Manila, and Per
Jellyfish is an integrated global digital marketing business founded in 2005 and headquartered at The Shard in London. Since June 2023 it has been part of The Brandtech Group, uniting media, creative and data through technology and generative AI.
AgencyIndex tracks 78 email marketing agencies in London. The list above is filtered to that intersection and ordered with verified and featured listings first.
For the wider editor's view on email marketing agencies in the UK, see the email marketing service brief. For context on London's marketing cluster, see the London location brief. The pricing, timeline and red-flag notes below apply to email marketing as a discipline; they do not change materially in London.
Boutique / freelance £300-1,500 · Mid-market £1,500-4,000 · Senior / enterprise £4,000-15,000+. Platform fees (Klaviyo, Braze, ActiveCampaign, HubSpot, Salesforce Marketing Cloud) usually passed through at cost. One-off audits £1,000-5,000.
1-2wk audit and deliverability fixes · 2-4wk first campaigns live · 4-8wk basic automation (welcome, abandoned cart, post-purchase) · 3-6mo credible ROI readout · 6-12mo mature lifecycle programme.
- · Offers to buy, rent, or scrape lists, or to 'warm up' purchased data
- · Treats UK GDPR as 'just add an unsubscribe link' or dismisses PECR for B2B
- · No mention of SPF, DKIM, DMARC, or a deliverability monitoring stack
- · Strategy reduces to 'send more emails' or 'volume fixes deliverability'
- · Reports only on opens and clicks, ignores complaint and bounce rates
- · Cannot show consent logs, suppression workflow, or a data processing agreement
Email Marketing agencies in other cities.
Other services in London.
What brands ask about email marketing agencies.
The 5 questions our editors get most often, answered honestly. These apply to email marketing as a discipline regardless of city.