842 agencies indexed·Latest entry: 17 July 2026
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Email Marketing in London · 75 agencies

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.

At a glance
  • 75 UK agencies offering email marketing in London
  • Part of the Email Marketing service set
  • Indexed in London
  • Reviewed 17 May 2026
Showing 73-75 of 75 email marketing agencies in LondonAll Email Marketing agencies
Pimento logo
Pimento
Independent·London·1000+ Employees

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

BrandingContent MarketingCreativeDigital StrategyEmail Marketing+5 more services·AutomotiveEducationEnergy+7 more industries
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Climb Online logo
Climb Online
Independent·London·11-50 Employees

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

CreativeDigital PRDigital StrategyEmail MarketingPPC+5 more services·Beauty & CosmeticsEducationFashion & Retail+2 more industries
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Jellyfish logo
Jellyfish
Network·London·1000+ Employees

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.

SEOPPCDigital StrategyCreativeContent Marketing+8 more services·Media & EntertainmentFashion & RetailFMCG+1 more industries
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Editor's note

AgencyIndex tracks 75 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.

Typical cost
£1,500-15,000
per month, retainer + platform pass-through

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.

Realistic timeline
4-12 weeks
to first ROI, 6-12 months to maturity

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.

Red flags
6 to watch
in any pitch
  • · 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 across the UK

Email Marketing agencies in other cities.

All locations
Email Marketing in Manchester20Email Marketing in Leeds14Email Marketing in Birmingham13Email Marketing in Bristol11Email Marketing in Brighton10Email Marketing in Cardiff8Email Marketing in Bournemouth7Email Marketing in Essex7Email Marketing in Chester6Email Marketing in Glasgow6Email Marketing in Leicester6Email Marketing in Liverpool6
Other disciplines in London

Other services in London.

All London agencies
Digital Strategy in London185SEO in London160Web Design in London159Web Development in London140PPC in London134Branding in London125Content Marketing in London123UX Design in London121Creative in London97Mobile App Development in London58Video Production in London56Digital PR in London52
Frequently asked

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.

Curated by humans

UK email marketing retainers in 2026 split into three tiers. Boutique shops and freelance specialists run £300-1,500 a month. Mid-market agencies typically charge £1,500-4,000. Senior or enterprise teams handling Klaviyo, Braze, or Salesforce Marketing Cloud builds land at £4,000-15,000 and above. Platform fees are usually passed through at cost, separate from the retainer. One-off audits cost between £1,000 and £5,000 depending on list size, automation depth, and deliverability scope.