Marketing Automation Software for Small Business: Which One?

If you want marketing automation software for small business and you have nobody technical to set it up, start with Brevo or MailerLite. Both have a genuinely free plan, both do the jobs that actually make you money, and neither needs a developer. The rest of this compares the real options so you can see why, and when you would pick something else.

The trap most owners fall into is buying the tool with the longest feature list. You do not need the longest list. You need follow-up emails that go out without you, review requests that get sent, and a welcome sequence for new customers. Pick the simplest tool that does those three things well, then stop shopping.

What "marketing automation" actually means for you

Strip out the jargon and it is this: software that sends the right message to the right customer at the right time, without you pressing send. A welcome email when someone joins your list. A nudge when a quote goes cold. A review request two days after a job. An abandoned-cart reminder for a shop.

That is the whole game. Everything else a platform brags about, lead scoring, predictive sending, attribution reporting, is noise until you have the basics running. So the comparison below is judged on one thing: how easily can a non-technical owner get those basic automations live.

Brevo: the best default for most local businesses

Brevo (formerly Sendinblue) is where I would start most owners. Its free plan is generous, with features like marketing automation and web tracking included. That matters, because many rivals strip automation out of their free tier and force you to pay before you have proved anything works.

Pricing is refreshingly honest. Brevo pricing plans in 2026 include Free, Starter from $9/month, Standard from $18/month, Professional from $499/month, and custom Enterprise pricing. The one to know is Standard. For most growing teams, the plan that actually matters is Standard at $18/month, because it adds automation, A/B testing, and logo removal without the $499/month jump to Professional.

The clever bit is how it charges. Most email marketing platforms charge based on subscriber count, which means costs spike as your list grows. Brevo flips this by charging based on emails sent (on paid plans), which is a significant advantage for businesses with large lists who send a few campaigns per month rather than daily.

The honest limit: the free and cheapest plans are thin on automation. Where Brevo falls short is in advanced automation. The free and Starter plans have very limited automation capabilities, and you need the Standard plan ($18/month) to get proper workflow builders. For a plumber or a salon, that is fine. You test on free, then move to Standard at $18 when you want proper workflows.

Who it is wrong for: if you send daily to a small, engaged list, a contact-priced tool can work out cheaper. Check your own send pattern before you commit.

MailerLite: pick this if you want the simplest editor

If you find most software fiddly, MailerLite is the friendliest to use. MailerLite is an extremely user-friendly tool and is a great choice for small businesses due to its generous free plan.

Be clear on the current free limits, because they changed recently. Subscriber limit was reduced from 500 to 250 active subscribers. Sending limit was reduced from 12,000 to 2,500 monthly emails. And free users can have up to 3 automations, 3 forms, 1 digital product, 1 landing page, and 1 website. That is still enough to prove the concept with a welcome sequence and a review request.

Paid pricing is low. Pricing starts at $12/month for 500 subscribers and 5000 emails/month. One point in its favour over Mailchimp: with MailerLite, you will not be charged for inactive contacts that have unsubscribed or bounced.

Who it is wrong for: it is lighter on deep automation reporting and lead scoring, so if you want to score and route leads in detail, look at ActiveCampaign instead. While MailerLite offers competitive pricing, it lacks some advanced features found in other tools, such as detailed automation reports, lead scoring.

Mailchimp: the famous name, and why I would pause

Mailchimp is the brand everyone knows, and it is genuinely easy to use. But its recent direction is unfriendly to small budgets. Mailchimp changed its pricing twice in the first four months of 2026. In January, the free plan was cut from 500 contacts and 1,000 monthly sends down to just 250 contacts and 500 sends. Then in April, legacy plan users who created their accounts before May 2019 and never migrated to a current tier were hit with an 11-13% price increase.

This is a pattern, not a blip. Since Intuit acquired Mailchimp for $12 billion in 2021, the platform has raised prices or reduced free plan limits almost every year. The free plan went from 2,000 contacts in 2022, to 500 in 2023, to 250 in 2026. Automation was fully stripped from the free tier by mid-2025.

Current paid pricing: Essentials starts at $13/month for 500 contacts; Standard starts at $20/month for 500 contacts; Premium starts at $350/month for 10,000 contacts. Watch the contact count trap. Mailchimp prices are based on your total contact count, including unsubscribed contacts still sitting in your account.

Who it is right for: an owner who values a slick, familiar interface and does not mind paying a premium for it. For most others, Brevo or MailerLite gives you the same jobs done for less.

ActiveCampaign: when you genuinely need power

If your business runs on nurturing leads over weeks, quotes that need chasing, memberships, a sales pipeline, ActiveCampaign is the step up. ActiveCampaign gives you enterprise-level automation at small-business pricing. The workflow builder supports conditional branching, lead scoring, site tracking, attribution, split testing within automations, and custom event triggers.

It sits in a clear place. It's the right choice if you've outgrown Mailchimp's automations but aren't ready for HubSpot's pricing. On cost, ActiveCampaign Plus charges per total contact count across four tiers. At 1,000 contacts, Plus is $49/mo (annual billing); at 10,000 contacts, it scales to $189/mo.

Who it is wrong for: a brand-new business with no list and no follow-up system yet. You would be paying for power you cannot use. Grow into it.

The ecommerce fork: use Omnisend instead

If you sell online through Shopify, WooCommerce or similar, the general tools above are the wrong shape. Omnisend is email marketing built for ecommerce with native Shopify integration, abandoned cart recovery, browse abandonment, and pre-built automation workflows. It has a real free tier to start on: 250 contacts and 500 emails per month free with no credit card required. When you outgrow it, the Standard plan starts at $16/month for 500 contacts and scales with your list size. The abandoned-cart and post-purchase flows alone usually pay for it.

What about the all-in-one platforms

You will see GoHighLevel and HubSpot recommended everywhere. Be careful. GoHighLevel bundles CRM, funnels, email, SMS and AI, but GoHighLevel's official 2026 pricing is $97/month (Starter), $297/month (Pro Unlimited), and $497/month (Agency SaaS Pro). Crucially, email, SMS, phone, and metered AI usage are billed separately on top of every plan. It is really built for agencies reselling to clients, not a solo owner sending a newsletter.

HubSpot is powerful and the jump is brutal: HubSpot Starter begins at $15/month for 1,000 contacts, but the Professional tier (where most automation features live) costs $890/month with a mandatory $3,000 onboarding fee. Skip it unless you have a marketing team.

A worked example: a two-van plumbing firm

Say you run a plumbing business with about 800 past customers on a spreadsheet. Here is the simple stack. Start on Brevo free. Import your customers. Build three automations: a welcome email for new enquiries, a quote-chaser that fires three days after you send a quote, and a review request two days after a job is marked done. Write each email once with the help of an AI assistant like ChatGPT or Claude, feeding it your tone and a few real examples.

That is it. When your sends outgrow the free daily limit, move to Brevo Standard at $18/month so the automations run properly. You are now following up every lead and asking every happy customer for a review, automatically, for the price of a couple of coffees a month. The review requests alone are the single biggest local trust lever you have.

What to do next

1. This week, pick ONE tool and open a free account. Brevo if you want power headroom, MailerLite if you want the gentlest learning curve, Omnisend if you sell online. Do not open three. 2. Export your existing customers into it and build just ONE automation: a review request that fires after a completed job or sale. Ship the boring, high-value one first. 3. Write the emails with an AI assistant, then send yourself a test and check every link. Turn it on and leave it running for two weeks before you add a second automation.

If you want to work through the setup with other owners doing the same thing rather than guessing alone, that is what the AIBL Club is for. Either way, the rule holds: one simple tool, one automation live this week, beats a perfect stack you never switch on.

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