Best Email Marketing Software for UK Small Businesses 2026
MailerLite is the best email marketing software for UK small businesses in 2026. For most one to ten person firms it gives you unlimited monthly sends, a clean editor and pricing from $10 a month, and it does not punish list growth the way Mailchimp now does. Brevo is the stronger choice for a usable free plan and EU-based data, while Mailchimp is hard to back on value after two rounds of cuts this year.
MailerLite: best for most UK small businesses
We run MailerLite on our own site through Powerkit, so this is not a spec-sheet pick. The editor stays out of your way, automations are easy to set up, and you can build signup forms, landing pages and a basic website without paying for extra tools. For a one to ten person business that just wants to send a reliable newsletter or promotion, it does the job with the least fuss.
Pricing is the other reason it wins. The Growing Business plan is $10 a month for up to 500 subscribers, around £8, and every paid plan includes unlimited monthly emails. The Advanced plan at $20 a month, roughly £16, adds the custom HTML editor, more automation triggers and an AI writing assistant.
One thing to be clear on: MailerLite quotes and bills in US dollars, with VAT added at checkout. The pound figures above are approximate and will shift with the exchange rate, so check the live total before you commit. There is a free plan too, covering 500 subscribers and 12,000 emails a month, though it carries MailerLite branding.
The weaknesses are worth knowing. The free plan was cut from 1,000 to 500 subscribers in September 2025, and free-tier email support stops after the first 30 days. There are also scattered reports of accounts being suspended during signup checks, so keep your list clean and your sending consent tidy from day one.
Brevo: best free tier and EU data hosting
Brevo, the French platform formerly known as Sendinblue, has the most usable free plan of the three. You get unlimited contacts and up to 300 emails a day, which is enough for a small business that sends the odd update rather than daily blasts. Because Brevo prices on emails sent rather than contacts stored, you can hold a large list for free and only pay when your volume rises.
For UK businesses, the data angle matters. Brevo is EU-based and hosts data in the EU, which keeps things simple for GDPR after Brexit. If client data handling is a concern in your trade, that is a genuine point in its favour.
Paid plans start at $9 a month for the Starter tier, around £7, which lifts the daily send cap and gives you 5,000 emails a month. The Standard plan from $18 a month, roughly £14, is where marketing automation, A/B testing and landing pages live.
The catches are real. Starter still shows Brevo branding unless you pay a $9 a month add-on to remove it, which nearly doubles the cost. The daily send cap on the free plan makes large one-off campaigns impractical, and if you exceed your monthly send limit, Brevo can pause your sending rather than charging overage.
Mailchimp: strong brand, weak value
Mailchimp is the name most people recognise, and it still has the deepest template library and the widest set of integrations. If you already use a platform that plugs straight into Mailchimp, that convenience has some value. For most small businesses in 2026, though, the numbers no longer add up.
The free plan was cut in January 2026 to just 250 contacts and 500 sends a month, effective from 17 February, with no automation. That is barely enough to test the platform, let alone run it. In April 2026, Mailchimp also raised prices by 11 to 13 per cent for legacy accounts created before May 2019 that had never moved to a current tier.
Paid pricing starts at $13 a month for Essentials at 500 contacts, around £10, but Essentials has no real automation. The cheapest plan with automation is Standard at $20 a month, roughly £16, the same headline price as MailerLite Advanced for less generosity elsewhere.
The bigger problem is how Mailchimp counts contacts. Subscribed, unsubscribed and non-subscribed contacts all count toward your limit, so you pay for people who will never receive your emails unless you manually archive them. Add the $9 a month custom-domain charge for landing pages and the real cost climbs well above the sticker price.
| Tool | Price | Usable free plan | Best for |
|---|---|---|---|
| MailerLite Top pick | From $10/mo | ✓ Yes | Most small businesses wanting value and simplicity |
| Brevo | From $9/mo | ✓ Yes | Large lists, low send volume and EU data hosting |
| Mailchimp | From $13/mo | ✗ | Teams tied to its integrations and templates |
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Verdict
For most UK small businesses, MailerLite is the one to choose. It gives you unlimited emails, a tool that is genuinely quick to use, and pricing that stays sensible as your list grows. Just remember it bills in dollars, so confirm the live total at checkout.
Pick Brevo if you want the best free plan, hold a big list but send rarely, or want EU-based data hosting for peace of mind on GDPR. Choose Mailchimp only if you are locked into its integrations or templates and the value trade-off is worth it to you. After this year’s cuts and increases, that case is harder to make than it used to be.
Is there a genuinely free email marketing tool for UK small businesses?
Yes. Brevo’s free plan gives you unlimited contacts and up to 300 emails a day, which suits low-volume senders. MailerLite’s free plan covers 500 subscribers and 12,000 emails a month but adds its branding. Mailchimp’s free plan is now too limited at 250 contacts and 500 sends to rely on.
Does MailerLite charge in pounds?
No. MailerLite quotes and bills in US dollars, with VAT added at checkout based on your location. The Growing Business plan is $10 a month, roughly £8, though the exact pound figure moves with the exchange rate.
Is Mailchimp still worth it for a small business in 2026?
For most small businesses, no. Mailchimp cut its free plan to 250 contacts in early 2026 and raised legacy prices in April, and it bills you for unsubscribed contacts. You get better value from MailerLite or Brevo unless you specifically need Mailchimp’s integrations.
Which email tool is best for UK GDPR compliance?
Brevo is the most reassuring because it is EU-based and hosts data in the EU, which simplifies matters after Brexit. That said, MailerLite and Mailchimp can both be used compliantly if you handle consent and data correctly. Compliance depends more on your own practices than the platform.
Whichever tool you choose, start free and test it with a real campaign before you pay. Build the list first, keep it clean, and only upgrade when send volume or automation forces the issue. MailerLite is where we would point most readers, but the right answer is the one that fits how often you actually email your customers.
