The best email marketing software for small businesses

Email is still the channel a small business owns outright. Social reach rises and falls with the algorithm; your list doesn't. The trouble is that the tools all look alike on their homepages, and the differences only show up later, usually on the invoice after the list doubles, or in the automation you can't build on your plan.

It's early July, a good moment to sort this out. Summer is quiet for many businesses, and a tool set up now has time to collect subscribers before the autumn and the end-of-year sales. This guide covers what to look for, how pricing really works, and the six tools we would pick.

How we chose

We focused on tools a small business can run without a marketing team, and judged them on:

• The real entry plan: what the free tier or cheapest plan includes, and what it leaves out.
• Pricing model: whether you pay for contacts, sends or active profiles, and how that scales.
• Ease of use: how quickly someone who isn't a marketer can send a decent campaign.
• Automation: from a simple welcome series to branching journeys.
• Fit: stores, service businesses, creators and publishers each need different things.

What to look for

How the tool charges you

This is the most important and least obvious difference.

Pricing model	How it works	Good for	Watch out for
By contacts	You pay for everyone on the list	Small, active lists	Unsubscribed or inactive contacts may still count
By emails sent	You pay for volume, not list size	Big lists that send monthly	Daily or monthly send caps on lower plans
By active profiles	You pay for contacts you can market to	Stores with large customer databases	Every contactable profile counts, mailed or not
By subscribers, with send allowance	Subscriber tiers with a monthly send limit	Regular newsletters	Allowance tied to tier; extra sends need an upgrade

Before you choose, write down three numbers: your list size today, your list size in a year, and how many emails you send a month. Price each tool against all three.

Automation you will actually use

Most small businesses need four automations: a welcome series, an abandoned cart or enquiry follow-up, a post-purchase or post-booking email, and a win-back for people who went quiet. Check that your plan supports them with enough steps. Some cheaper plans cap the number of steps or actions in a flow.

Deliverability basics

A good tool helps, but deliverability is mostly up to you:

• Authenticate your domain with SPF, DKIM and DMARC before you send.
• Use one-click unsubscribe, which the big mailbox providers now expect.
• Clean your list every few months and stop mailing people who never open.
• Don't buy lists. It damages your sender reputation for everything else you send.

Where subscribers come from

The tool should connect to your website, store and other sign-up points: forms, pop-ups, checkout and live chat. Chat tools such as Tidio can pass subscribers straight to Mailchimp or Klaviyo, which our guide to growing an email list covers in more detail.

Which one should you choose?

• You want one easy tool for newsletters and simple automations: MailerLite.
• You have a large list and send a monthly newsletter: Brevo.
• You are a creator selling courses or digital products: Kit.
• You depend on a particular integration or agency workflow: Mailchimp.
• Automation is the heart of your marketing: ActiveCampaign.
• The newsletter is your business: beehiiv.

If you run an online store with lots of purchase data, also look at Klaviyo, which is built around store events and segmentation.

Setting up in the first week

1. Authenticate your sending domain and send a test to Gmail, Outlook and Yahoo addresses.
2. Import only consenting contacts, with the date and source of consent where you have it.
3. Build the welcome series first. Three emails over a week: thanks and what to expect, your most useful content, then an offer or next step.
4. Add sign-up points on your homepage, footer, checkout and any lead magnets.
5. Pick a sending rhythm you can sustain, then put it in the calendar.

Common mistakes in the first months

• Sending only promotions. A list that hears from you only when there's a sale learns to ignore you. Mix useful content, news and offers.
• No welcome email. New subscribers are most interested in the first few days. A welcome series that sends nothing for a month wastes that.
• Designing for desktop. Most emails are opened on phones. Use one column, large buttons and short paragraphs, and test on your own phone first.
• Ignoring replies. Use a reply-to address someone reads. Replies are valuable feedback and a positive signal to mailbox providers.
• Measuring opens alone. Privacy features inflate open rates. Clicks, replies and sales are better signs that a campaign worked.

Pricing traps to avoid

• Paying for dead contacts. Archive or delete unsubscribed and long-inactive contacts where your tool bills for them.
• Choosing on the free plan alone. Price the plan you will need at twice your current list size.
• Annual billing too early. Run a couple of months monthly before committing to a year.
• Add-ons that creep. Extra users, dedicated IPs, SMS credits and premium support can each change the total.

For more options, browse the email marketing category, or read our guide to Mailchimp alternatives if you are already on Mailchimp and the bill is growing.