842 agencies indexed·Latest entry: 17 July 2026
Email Marketing in Cardiff · 8 agencies

Email Marketing agencies in Cardiff.

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 Cardiff.

At a glance
  • 8 UK agencies offering email marketing in Cardiff
  • Part of the Email Marketing service set
  • Indexed in Cardiff
  • Reviewed 17 May 2026
Showing 1-8 of 8 email marketing agencies in CardiffAll Email Marketing agencies
Hello Starling logo
Hello Starling
Independent·Cardiff·11-50 Employees·Verified

Hello Starling is a Cardiff-based media planning and buying agency that prioritises result-driven strategies. Uniquely identified by its dedication to delivering quantifiable results for its clients, Hello Starling utilises data-led insights to customise campaigns for optimal engagement and influence. With a diversity of media specialities, encompassing TV, cinema, radio, outdoor, press, digital,

New Media Ghost logo
New Media Ghost
Independent·Cardiff·2-10 Employees

New Media Ghost, a customised digital marketing agency based in Cardiff, excels in curating robust online presence for both businesses and individuals. As specialists in crafting and engaging with digital audiences, we distinguish ourselves through our unwavering commitment to discretion and tailoring unique strategies. We guarantee your content and social media resonate with your brand's voice, s

Patter logo
Patter
Independent·Cardiff·2-10 Employees

Patter, a UK-based marketing agency situated in Abercynon, distinguishes itself with a people-centric methodology. We specialise in providing high-yielding websites, strategic paid advertising, and smart email marketing solutions to fuel genuine, long-term growth for businesses. Our team, composed of leading strategic minds and innovative creatives, is dedicated to securing more customers and boos

Mamba Marketing logo
Mamba Marketing
Independent·Cardiff·11-50 Employees

Mamba Marketing, a UK-based, award-winning full-service marketing agency, boasts additional branches in Dubai and the US. Distinguished by an extensive suite of services, Mamba Marketing specialises in B2C and B2B solutions, e-commerce strategies, lead generation, and content initiatives, all tailored to drive short-term victories and sustainable brand expansion. The agency's unique selling propos

Alytix Marketing logo
Alytix Marketing
Independent·Cardiff·2-10 Employees

Alytix Marketing, a UK-based marketing and analytics firm in Cardiff, excels in converting intricate data into practical insights to boost marketing and sales results. Our distinct focus is on offering a comprehensive suite of services, from managing digital campaigns to crafting analytics strategies. We distinguish ourselves through our 'done-for-you' analytics solutions and dynamic data visualis

Newwave Design logo
Newwave Design
Independent·Cardiff·11-50 Employees

Newwave is a multifaceted branding, web, and marketing agency nestled in the heart of Cardiff. Our distinguishing feature is our extensive array of services encompassing branding, web design, ecommerce solutions, and an all-encompassing suite of marketing services. This includes SEO, Google Ads, social media management, and email marketing. Known for producing outstanding results, Newwave is proud

Martin Hopkins Design logo
Martin Hopkins Design
Independent·Cardiff·2-10 Employees

Established in Cardiff, Wales, Martin Hopkins Partnership Ltd. is a leading brand, design, and digital agency, renowned for crafting distinctive brands exuding vibrancy and dynamism. Our unique selling proposition lies in our determination to create brands with a distinctive tone, coupled with our robust emphasis on superior user experience and fruitful customer interactions. With a legacy dating

WCS Agency logo
WCS Agency
Independent·Cardiff·2-10 Employees

WCS Agency, a dynamic marketing and PR firm located in Cardiff, embodies the fusion of creativity and strategy, deeply rooted in Welsh heritage yet extending its influence globally. This agency distinguishes itself with a steadfast team of professionals, leveraging cutting-edge tools to deliver targeted, strategic, and impactful marketing outcomes. WCS Agency's commitment goes beyond superficial m

Editor's note

AgencyIndex tracks 8 email marketing agencies in Cardiff. 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 Cardiff's marketing cluster, see the Cardiff location brief. The pricing, timeline and red-flag notes below apply to email marketing as a discipline; they do not change materially in Cardiff.

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
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.