MailerLite vs ActiveCampaign: Which One Actually Fits Your List

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The short answer

These two are not competing for the same buyer, and the pricing pages make that obvious once you line them up. MailerLite is built to get a small sender started cheaply and sell things alongside a modest list. ActiveCampaign is built for behaviour-driven automation, and charges accordingly.

Pick MailerLite if your list is small, your sequences are simple, and price is the binding constraint. Pick ActiveCampaign if automation is the actual product and you can absorb both the cost and the learning curve. The rest of this compares them on the four things that decide it in practice: entry cost, how each bills as you grow, what the automation ceiling is, and how hard each is to learn.

Entry cost: the gap is structural

MailerLite has a free tier. ActiveCampaign does not — it offers a 14-day trial on all tiers and nothing else. That single difference dominates the decision for anyone testing an idea rather than running a business.

MailerLite's free plan carries up to 250 active subscribers and 2,500 emails per month with 2 user seats. Paid starts at $12 per month for Comfort. ActiveCampaign's ladder runs Starter, Plus, Professional and Enterprise at $15, $49, $79 and $145 per month on annual billing — or $19, $59, $99 and $179 monthly — all quoted at 1,000 contacts.

So at the entry point the difference is roughly $12 against $15, which sounds marginal. It is not, because the two bill on different things as you grow.

How each one bills as you grow

MailerLite meters sending. On Comfort the monthly allowance is ten times the ceiling of your subscriber tier, so a list that emails frequently hits the allowance before it hits the subscriber cap. Automations are also count-gated: 3 on the free plan, 50 on Comfort, uncapped only on Power at $25 per month, which also lifts subscriber and send limits subject to a fair use policy.

ActiveCampaign meters contacts, and here there is a rule that matters more than any feature for anyone migrating an existing list. For accounts created on or after November 3, 2025, all contacts count against your limit — including unsubscribed, unconfirmed and bounced ones — unless you archive them, and archiving is subject to monthly limits. A list carrying years of dead weight costs more on ActiveCampaign than its active-subscriber count suggests. Audit and clean before you price it.

That asymmetry is the practical core of the comparison. MailerLite punishes send volume. ActiveCampaign punishes an untidy list.

Where ActiveCampaign earns its price

Reviewers consistently rate its visual automation builder and segmentation as best-in-class for the money. Users describe building multi-branch, behaviour-triggered workflows — abandoned-cart sequences, post-purchase follow-ups, sales-pipeline triggers wired into the built-in CRM — that a simpler tool is not designed to express. Verified-review summaries across thousands of GetApp reviews report real time savings and more personalised nurture once the setup is done.

The cost is not only money. Learning curve is the most tagged complaint on G2, with 601 reviews mentioning it. Independent testers estimate about an hour to a first campaign, several days to a week before complex automations feel natural, and two to four weeks before a team is fluent. Documentation and tutorial videos have been reported as lagging the current interface, which adds friction exactly when you need help. Expensive is the second most tagged complaint, at 506 mentions, and lead scoring and predictive sending sit on higher tiers, so Starter is more restricted than its headline price suggests.

Who should skip ActiveCampaign. If you mainly send a newsletter, multiple independent reviews reach the same blunt conclusion: without heavy automation use you are overpaying. If your team needs to be productive this week, the learning curve is a real cost, not a footnote.

Where MailerLite earns its place

MailerLite's advantage is breadth at the low end. Email campaigns, websites, landing pages and digital product or booking sales run from one workspace, and they are present from the free tier rather than sold as upgrades. For a creator selling a small product to a small list, that removes an entire tool from the stack.

Its limits are equally concrete, and they are limits rather than complaints — MailerLite's own pricing page defines them. The free tier's 250 subscribers and 2,500 monthly emails are restrictive next to free tiers that carry thousands. Three automations on free and fifty on Comfort is a ceiling you can actually reach. Even Power's unlimited sending is qualified by a fair use policy rather than being unconditional. Team size is gated too: 2 seats free, 3 on Comfort, unlimited only on Power.

Who should skip MailerLite. If you need more than fifty automations, or you send heavily relative to list size, you will be pushed to Power regardless of how small your list is — at which point the price advantage narrows and you should compare capability directly rather than entry price.

An honest note on the evidence

The ActiveCampaign judgements above rest on independent reviewer and tester evidence. The MailerLite section does not: its plan limits come from the vendor's own pricing page, and no independent user-experience evidence was retrievable when this was written. So we describe what MailerLite's plans permit, and we do not claim anything about how users feel using it. Treat that asymmetry as a gap in the record rather than as a verdict.

The bottom line

Small list, simple sequences, tight budget, wanting a site and a product in the same tool: MailerLite, starting free and moving to Comfort at $12 when you outgrow it.

Automation is the point, the list is worth money, and you can spend two to four weeks getting fluent: ActiveCampaign, with the contact-billing rule priced in before you migrate.

Verify current pricing on each vendor's own page before committing. Both have changed pricing within the last year.