Email Marketing: The Channel You Actually Own

Your email list is the only marketing channel you actually own. Social platforms change their algorithms, restrict reach, or disappear. Google updates its rankings overnight. But the people who’ve given you their email address — that relationship is yours. No platform can take it away.

Email also delivers consistently strong returns. The average ROI on email spend sits between £35–45 for every £1 invested, depending on industry and execution. Nothing else in digital marketing comes close at that cost basis.

What email marketing actually covers

It’s more than a monthly newsletter. Properly set up, email marketing includes broadcast campaigns (one-time sends for announcements or promotions), automated sequences (triggered by actions — welcome series, post-purchase, abandoned cart, re-engagement), segmented sends (different messages to different parts of your list based on behaviour or purchase history), and transactional emails (order confirmations and shipping updates, which are underestimated as marketing touchpoints).

Most businesses only do the first one. The real leverage is in automation — emails that go out without anyone pressing send, at exactly the right moment in the customer relationship.

Choosing an email platform

The right platform depends on list size, budget, and what you need it to do. For most businesses starting out: Mailchimp is the most widely known and has a usable free tier. Kit (formerly ConvertKit) is better suited to content creators and service businesses. Brevo (formerly Sendinblue) has strong automation on a low-cost plan. Klaviyo is the standard for e-commerce businesses with meaningful volume.

Don’t over-engineer the platform choice. Pick one that handles your current needs, can grow with you, and has the automation features you’ll eventually use. The best platform is the one you’ll actually use — a free tool you use consistently beats an expensive enterprise platform you’ve half-configured.

Building a list worth having

A large list of unengaged people is worth considerably less than a small list of people who actually want to hear from you. How you build it matters.

Give people a specific reason to sign up — a discount code for e-commerce, a useful guide for a service business, early access if you’re product-based. “Join our newsletter” is not a reason. Be clear about what people are subscribing to and how often you’ll contact them. And never buy email lists: besides being largely illegal under GDPR, bought lists generate spam complaints and a damaged sending reputation that takes months to repair.

Put your sign-up form where attention is: at the end of your content, in a sticky footer, in the navigation, and as an exit-intent popup if your platform supports it. Each touchpoint adds a small percentage of visitors to the list. Over time, the cumulative effect is significant.

Your welcome sequence

The welcome email is the most important email you’ll ever send — it has the highest open rates of any email in the sequence, because the subscriber’s interest is at its peak immediately after signing up. Most businesses waste it with a generic “thanks for subscribing.”

A basic welcome sequence: Email 1 (sent immediately) — deliver whatever you promised, introduce yourself, set expectations for what they’ll receive. Email 2 (two to three days later) — share your most useful piece of content, something that demonstrates your expertise and gives them a reason to stay subscribed. Email 3 (five to seven days later) — address a common problem or question in your area, with a soft reference to how you can help. That’s it. Three emails over a week, delivering real value, building the relationship before you ever make an ask.

What to send

The businesses with the highest-performing email lists send content their subscribers would miss if it stopped. That sounds obvious. Most email is not like that.

Useful formats: answers to questions your customers frequently ask, commentary on relevant industry news, summaries of content you’ve published elsewhere, case studies or examples from your own work, and genuinely useful tips that don’t require the reader to buy anything to benefit from them. Promotional emails work — but they work better when they’re a minority of what you send, not the entirety of it.

The ratio that works for most businesses: roughly three value emails for every one promotional send. This isn’t a universal law, but it reflects a simple truth — trust is built by giving, and promotional emails spend that trust. Keep giving more than you spend.

Email deliverability basics

An email that doesn’t reach the inbox is worthless. Deliverability — whether your emails land in the inbox or the spam folder — is determined by your sender reputation, and sender reputation is determined by how your subscribers engage with your emails.

The basics: send from a custom domain (not Gmail or Hotmail), set up SPF, DKIM, and DMARC authentication records (your email platform’s support documentation will walk you through this), clean your list regularly by removing subscribers who haven’t opened in six months, and never buy lists. Engagement rate — the proportion of subscribers who open and click — is the biggest single factor in deliverability. A small, highly engaged list delivers better than a large, indifferent one.

Metrics that matter

Open rate (industry average varies by sector, but 25–40% is healthy for a small-business list), click-through rate (2–5% is reasonable, higher for well-segmented sends), unsubscribe rate (under 0.5% per send is fine), and revenue per email sent (for e-commerce). Don’t obsess over open rates alone — Apple’s Mail Privacy Protection has inflated open rates since 2021, making clicks and conversions more reliable measures of actual engagement.

Realistic timelines

Month 1: setup — email service provider, opt-in forms, basic welcome automation, first sends. Months 2–3: list starts growing, you’re learning what your audience responds to, open rates stabilise. Months 3–6: automation working, consistent cadence established. Six months onwards: segmentation, A/B testing, list health management. This is where it gets sophisticated, and where the compounding becomes visible.

Email vs other channels

Getting started

Pick a tool (Mailchimp, Kit, or Brevo are all solid free starting points), set up a basic opt-in form, write a welcome email that actually delivers something useful, and start sending. The sophistication comes later. The important thing is to start collecting addresses now — because the list you don’t build today is the one you’ll wish you had in two years.

What’s a good email open rate?

It depends on your industry and list size, but 25–40% open rate is healthy for a small-business list. Below 20% suggests deliverability issues, an unengaged list, or subject lines that aren’t working. Above 50% is excellent and typically indicates a highly engaged niche audience. Note that open rates have been inflated since Apple’s Mail Privacy Protection in 2021 — treat them as directional rather than precise.

How often should I send marketing emails?

Often enough to stay top of mind, not so often that you become noise. For most businesses, once a week or once a fortnight is the right cadence. Daily emails work for some high-engagement publishers but require consistently exceptional content to justify the frequency. Start with fortnightly and increase if your audience responds well — it’s much easier to increase frequency than to repair the damage from annoying people.

Which email platform should I use?

For most small businesses starting out: Kit if you’re a content creator or service business, Mailchimp if you want the most widely-used option with solid documentation, Brevo if budget is tight and you need solid automation. For e-commerce with meaningful revenue: Klaviyo. Don’t switch platforms once you’ve started unless you have a compelling reason — migration is painful and you’ll lose performance data.

How do I grow my email list?

Create a specific reason to sign up (a useful guide, a discount, early access), put your sign-up form in high-traffic locations on your website, mention it in your social profiles and content, and add it to the signature of all your business emails. Organic list growth is slow but produces the most engaged subscribers. Don’t buy lists — the short-term gain isn’t worth the long-term damage to your sender reputation.

What should my first email say?

Deliver what you promised, introduce yourself briefly, tell them what they can expect to receive and how often, and give them something genuinely useful before you ask for anything. The welcome email has the highest open rates of any email you’ll send — don’t waste it on a generic “thanks for joining.” Use it to set the tone for the relationship.