Best Email Marketing Tools UK 2026: For Small Businesses and Freelancers
Email marketing remains one of the highest-ROI channels for small businesses — but the tools can vary enormously in price, ease of use, and deliverability. Here’s an honest look at the best options available in the UK in 2026.
1. Campaign Monitor — Best for Deliverability and Design
Campaign Monitor (now part of the Marigold group) has been around since 2004 and has built a reputation for one thing above all else: getting emails into inboxes. Their 99%+ deliverability rate is genuinely impressive, and it’s the reason many agencies and professional marketers choose it over cheaper alternatives.
The drag-and-drop email builder is polished and produces clean, well-structured HTML — important if you’re sending to clients who use a mix of Gmail, Outlook, and Apple Mail. Templates are professional without being generic, and you can customise them extensively without touching any code.
Who it’s for: Small businesses and agencies that want professional-grade deliverability and design without needing a developer.
Standout features:
- 99%+ deliverability
- Beautiful, customisable templates
- Automation and drip sequences
- Detailed analytics (open rate, click rate, bounce, unsubscribes)
- List segmentation and personalisation
- Integrations with Shopify, WordPress, Salesforce, and hundreds more
Pricing: Free trial available. Paid plans from around £9/month for up to 500 subscribers.
Try Campaign Monitor →2. MailerLite — Best Value for Small Lists
MailerLite is the go-to recommendation for small businesses just getting started with email marketing. The free plan is genuinely useful — up to 1,000 subscribers and 12,000 emails per month — and the paid plans are among the most affordable in the market.
The interface is clean and easy to navigate, the automation builder is solid for the price, and deliverability is good (though not quite at Campaign Monitor’s level). If you’re running a newsletter or simple drip sequence with under a few thousand subscribers, MailerLite is hard to beat on value.
Who it’s for: Freelancers, micro-businesses, and newsletter creators who want a capable tool without a high monthly bill.
Standout features:
- Generous free plan (1,000 subscribers / 12,000 emails/month)
- Simple drag-and-drop editor
- Landing page builder included
- Basic automation
- Good reporting
Pricing: Free up to 1,000 subscribers. Paid from around £8/month.
3. Mailchimp — Best Known, But Watch the Pricing
Mailchimp is the most recognisable name in email marketing — and for good reason. It’s easy to use, integrates with almost everything, and has a huge library of templates and guides. However, Mailchimp has moved aggressively upmarket in recent years, and its pricing has become complicated and expensive as your list grows.
The free plan is now more restricted than it used to be, and features like automation and A/B testing are locked behind higher tiers. If you’re starting out and plan to grow quickly, you may find yourself hitting pricing walls sooner than expected.
Who it’s for: Businesses already using Mailchimp who are happy with it, or those who need deep integrations with e-commerce platforms like Shopify.
Standout features:
- Huge template library
- Strong e-commerce integrations
- A/B testing
- Built-in CRM features
- Excellent onboarding for beginners
Pricing: Free up to 500 contacts (limited). Paid from around £11/month.
4. Brevo (formerly Sendinblue) — Best for Transactional Email
Brevo is less well-known than the others but is particularly strong if you need to send transactional emails (order confirmations, password resets, booking notifications) alongside marketing campaigns. Pricing is based on emails sent rather than list size, which can work out cheaper if you have a large list but send infrequently.
The interface has improved significantly and automation is solid. Worth considering if you’re running a small e-commerce business or need to combine marketing and transactional email under one tool.
Who it’s for: Small e-commerce businesses or anyone who needs to combine marketing and transactional email.
Standout features:
- Pricing by emails sent (not list size)
- Strong transactional email
- SMS marketing included
- Good automation builder
Pricing: Free up to 300 emails/day. Paid from around £16/month.
Which Should You Choose?
| Campaign Monitor | MailerLite | Mailchimp | Brevo | |
|---|---|---|---|---|
| Best for | Deliverability & design | Value & simplicity | Integrations | Transactional email |
| Free plan | Trial only | ✅ Yes | ✅ Limited | ✅ Yes |
| Deliverability | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐⭐ |
| Ease of use | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐ |
| Pricing | Mid | Low | Mid–High | Low–Mid |
My recommendation: If deliverability and professional design matter most — particularly if you’re sending on behalf of clients or running a business newsletter — Campaign Monitor is the standout choice. For small lists on a budget, MailerLite offers exceptional value. Avoid Mailchimp unless you have a specific reason to use it; the pricing has crept up and there are better-value alternatives.
Try Campaign Monitor →