Last Updated on April 8, 2026
Email marketing is using email to communicate with potential and existing customers. It includes newsletters, promotional offers, product updates, and automated sequences that nurture leads towards a purchase. It is one of the highest-returning marketing channels available, and UK businesses of all sizes use it.
Unlike social media, where algorithms decide who sees your content, email lands directly in someone’s inbox. You own the relationship and control the message.
Why email marketing matters
Email consistently delivers the highest return on investment of any digital marketing channel. Industry data suggests an average return of £35 to £40 for every £1 spent. Even if your results are half that, it still outperforms most other channels.
For UK small businesses, email is particularly powerful because it builds a direct relationship with your audience. Social media followers can disappear if a platform changes its algorithm or shuts down. Your email list belongs to you.
Email also works at every stage of the customer journey. You can use it to welcome new subscribers, educate potential buyers, promote offers to warm leads, and keep existing customers coming back.
Types of email marketing
Newsletters. Regular updates that share news, tips, or insights. They keep your brand top of mind without being overly promotional. Whito Weekly is an example of this.
Promotional emails. Announcements about sales, new products, limited-time offers, or events. Best used sparingly so subscribers do not tune out.
Automated sequences. A series of emails triggered by a specific action. When someone downloads a guide, they might receive a welcome email, followed by three educational emails over the next two weeks, then an offer. This runs automatically once set up.
Transactional emails. Order confirmations, shipping updates, booking reminders. These have the highest open rates and are an opportunity to reinforce your brand and suggest next steps.
How to do email marketing well
Build your list properly. Never buy email lists. They are full of uninterested people, result in high spam complaints, and can get your sending domain blacklisted. Instead, offer something valuable in exchange for an email address: a free guide, a checklist, a discount, or access to exclusive content.
Write subject lines people want to open. Be specific and honest. “5 tax deadlines you need to know this quarter” works better than “Our latest newsletter!” because it tells the reader exactly what they will get.
Keep it focused. Each email should have one clear purpose and one call to action. Trying to cover five different topics in one email dilutes the message and confuses the reader.
Comply with UK regulations. Under GDPR and the Privacy and Electronic Communications Regulations, you need clear consent before sending marketing emails. Include an easy unsubscribe option in every email. Keep records of how and when people opted in.
UK business example
A small independent bakery in Edinburgh with a loyal local customer base wanted to increase repeat orders and promote their new delivery service. They started collecting email addresses at the till, on their website, and through an Instagram competition.
Every Friday, they sent a short email: what fresh items were available that weekend, any seasonal specials, and a short story about the ingredients or the baking process. Nothing salesy, just genuinely interesting content from a business that clearly cared about what they made.
Within three months they had 1,200 subscribers. Their Friday email had a 48% open rate, well above the industry average of around 20%. Delivery orders spiked every Friday afternoon after the email went out. The owner estimated the email list generated an additional £2,000 per month in revenue, with almost no cost beyond the email platform subscription at £25 per month.
Common mistakes
Emailing too often and burning out your list. Emailing too rarely so people forget who you are. Not segmenting your list, so everyone gets the same message regardless of their interests. Writing emails that are all promotion with no value. Ignoring mobile, when over 60% of emails in the UK are opened on a phone.
Where email marketing sits in the Whito framework
Email marketing starts in the Build stage. You need a clear offer and a functioning website before you start collecting addresses. At the Scale stage, you add automation, segmentation, and more sophisticated sequences.
Learn about content marketing or understand conversion rates.
