833 agencies indexed·Latest entry: 18 June 2026
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Service · 241 agencies

Email Marketing agencies.

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.

At a glance
  • 241 UK agencies offering email marketing
  • Across 30 UK locations
  • Reviewed 17 May 2026
Showing 241-241 of 241 email marketing agenciesView in full archive
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.

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Editor's note
The UK has roughly 230 agencies that lead with email marketing or eCRM. They split into three buckets: boutique shops and lifecycle specialists charging £300-1,500 a month for smaller programmes, mid-market agencies running fuller eCRM at £1,500-4,000, and senior or enterprise teams handling complex Klaviyo, Braze, or Salesforce Marketing Cloud builds at £4,000-15,000+. Most retain monthly on scope. Platform fees (Klaviyo, Braze, ActiveCampaign, HubSpot, Salesforce Marketing Cloud) are typically passed through to the client at cost. The discipline moved decisively in 2024 when Gmail and Yahoo enforced sender authentication on bulk senders, with Microsoft tightening the same rules through 2025. SPF, DKIM, and DMARC are no longer optional. DMARC at quarantine or reject is the working standard, and BIMI sits on top of that as the visual trust layer. Anyone selling email in 2026 without a deliverability story is selling something older. Underneath that, the actual work has shifted toward lifecycle automation: welcome flows, post-purchase journeys, abandoned browse and cart, win-back, and consent-driven segmentation. Reporting now tracks inbox placement, complaint rate, and revenue contribution, not just opens. Below: the full index, filtered to whoever is doing this properly under UK GDPR and PECR.
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 by city.

All UK locations
Email Marketing agencies in London75Email Marketing agencies in Manchester19Email Marketing agencies in Leeds14Email Marketing agencies in Birmingham13Email Marketing agencies in Bristol12Email Marketing agencies in Brighton10Email Marketing agencies in Cardiff8Email Marketing agencies in Bournemouth7Email Marketing agencies in Essex7Email Marketing agencies in Chester6Email Marketing agencies in Glasgow6Email Marketing agencies in Leicester6
Email Marketing by sector

Email Marketing agencies for specific industries.

All industries
Email Marketing agencies for IT & Technology125Email Marketing agencies for Fashion & Retail92Email Marketing agencies for Finance84Email Marketing agencies for Food & Beverage77Email Marketing agencies for Healthcare71Email Marketing agencies for Hospitality70Email Marketing agencies for Education61Email Marketing agencies for Travel & Tourism61Email Marketing agencies for Real Estate60Email Marketing agencies for Automotive55Email Marketing agencies for Legal52Email Marketing agencies for Non-Profit Organisation52
Frequently asked

What brands ask about email marketing agencies.

5 questions our editors get most often, answered honestly. No agency-marketing speak.

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.

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