Email Marketing Is Not Dead
Despite what social media advocates will tell you, email remains one of the highest-ROI marketing channels for small businesses. The average ROI for email marketing in 2026 is approximately £36 for every £1 spent, according to the DMA UK.
What AI does is make email marketing faster, more personalised, and more effective, without requiring a dedicated marketing team to pull it off.
7 Practical Ways to Use AI in Email Marketing
1. Subject Line Generation
Subject lines are responsible for whether your email gets opened or ignored. AI can generate dozens of options in seconds, allowing you to pick the best or A/B test them.
How to do it: Open ChatGPT or Claude and say: "Generate 10 subject lines for a promotional email about our spring sale. We are a [type of business] in [location]. The sale offers 20% off all services. Tone: friendly and urgent but not pushy."
Why it works: AI generates a wider range of options than most people come up with on their own, including angles you might not have considered.
2. Email Copy First Drafts
Writing marketing emails from scratch takes time. AI can produce solid first drafts in seconds, which you then edit and personalise.
How to do it: Give the AI your key details (offer, audience, tone, length, call to action) and let it draft the email. Review, edit for your brand voice, and add any specific details the AI missed.
Time saved: 30 to 60 minutes per email campaign, depending on complexity.
3. Personalisation at Scale
Personalised emails perform dramatically better than generic ones. Open rates are typically 26% higher, and click-through rates are 14% higher. But personalising emails manually for a large list is impractical.
How to do it: Most email platforms (Mailchimp, Brevo, Kit) now offer AI-powered personalisation. You set up dynamic content blocks that change based on subscriber data: past purchases, location, engagement history, interests.
Example: Instead of sending the same email to your entire list, AI segments automatically: new customers get a welcome offer, loyal customers get an exclusive preview, and lapsed customers get a re-engagement message. One campaign, three versions, zero manual work.
4. Send Time Optimisation
When you send an email matters as much as what you send. AI analyses your subscribers' past behaviour to determine the optimal send time for each individual.
Tools with this feature: Mailchimp (Smart Send), Brevo (Send Time Optimisation), Kit (formerly ConvertKit), ActiveCampaign
Impact: Typical improvement of 10 to 20% in open rates just from optimising send times.
5. List Segmentation
AI can analyse your subscriber list and automatically create segments based on behaviour, preferences, and engagement patterns. This means more relevant emails to each group, which means higher engagement.
Practical segments to create:
- Highly engaged (opened 3+ emails in the last month)
- At risk (have not opened in 60+ days)
- Buyers vs browsers
- Industry or interest-based segments
- Geographic segments
6. Automated Sequences
AI can help you design and write email sequences that run automatically. Welcome sequences, onboarding flows, re-engagement campaigns, and post-purchase follow-ups.
Example welcome sequence:
- Day 0: Welcome email with brand introduction
- Day 2: Your most popular content or best-selling products
- Day 5: Social proof (case studies, reviews, testimonials)
- Day 10: First offer or incentive
AI can draft all of these in an hour. You review, refine, and set them live.
7. A/B Testing Analysis
Most email platforms offer A/B testing, but interpreting the results and deciding what to test next is where many businesses stall. AI can analyse your A/B test results and suggest the next experiments to run.
How to do it: Share your A/B test results with ChatGPT or Claude and ask: "Based on these results, what should I test next to improve my open rate / click-through rate?"
Recommended Email Marketing Tools (UK Pricing)
Mailchimp
- Price: Free up to 500 contacts. Standard from £10/month.
- AI features: Subject line helper, send time optimisation, content suggestions, predictive segmentation.
- Best for: Small businesses starting out with email marketing.
Brevo (formerly Sendinblue)
- Price: Free up to 300 emails/day. Starter from £7/month.
- AI features: Send time optimisation, predictive sending, AI-powered segmentation.
- Best for: Budget-conscious businesses with larger lists.
Kit (formerly ConvertKit)
- Price: Free up to 10,000 subscribers (limited). Creator from £7.50/month.
- AI features: Subject line suggestions, automated sequences, subscriber tagging.
- Best for: Content creators and service-based businesses.
ActiveCampaign
- Price: From £23/month.
- AI features: Predictive sending, win probability scoring, AI-powered automation.
- Best for: Businesses ready for more sophisticated automation.
Common Mistakes
- Over-relying on AI for tone. AI writes competent copy, but it can sound generic. Always edit for your brand voice.
- Not reviewing before sending. AI can produce errors, awkward phrasing, or inappropriate content. Always read the email before it goes out.
- Ignoring GDPR. AI does not change your email marketing consent requirements. You still need proper opt-in and unsubscribe options.
- Sending too often. AI makes it easy to produce more content. Resist the urge to email your list three times a week unless you have genuine value to offer each time.
Frequently Asked Questions
Can AI write all my marketing emails?
AI can produce solid first drafts, but you should always review and edit for accuracy, tone, and brand voice. Think of AI as a very fast first-draft writer, not a replacement for your marketing judgement.
Is AI email marketing expensive?
No. Most email platforms include AI features in their standard plans. If you add a ChatGPT subscription for drafting (£20/month), you are looking at well under £50/month total for a capable email marketing setup.
How do I personalise emails without being creepy?
Use data your customers have willingly provided and behavioural data from your own platform (what they bought, what they clicked on). Avoid overly specific targeting that makes people feel surveilled. A personal touch, not a personal file.
Will AI-generated emails hurt my deliverability?
Not inherently. Email deliverability depends on your sender reputation, list hygiene, and content quality. AI-generated content is not treated differently by email providers. Just avoid spammy language and practices.