Systeme.io vs MailerLite: we ran the same newsletter test on both
Same job on both tools: a sign-up page, a subscriber and a first email from our own domain. Which free plan goes further, and which one is easier to set up.
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Pick Systeme.io if you need room to grow for free: 2,000 contacts and unlimited emails, plus pages, courses and payments. Pick MailerLite if email is the whole job and you want the smoothest setup: our domain was ready in 20 minutes instead of most of a day.
Systeme.io and MailerLite both promise a free way to start a newsletter. We tested both on 14
November 2026 with the same job: build a sign-up page, collect a test subscriber and send a first
email from our own domain, tooldebrief.com. This page puts the results side by side. For the full
detail, read our Systeme.io review and
MailerLite review.
The short answer
- Choose Systeme.io if you want the biggest free plan and may later sell a course or a product from the same account.
- Choose MailerLite if you only need email and want the setup to be quick and clear, and you are fine paying once your list passes 250 people.
Side by side
What we saw in our tests, plus the free plan limits from each pricing page on 14 November 2026.
| Systeme.io | MailerLite | |
|---|---|---|
| Free plan contacts | 2,000 | 250 |
| Free plan emails | Unlimited | 2,500 a month |
| Free plan automations | 1 rule, 1 email campaign | 3 automations, up to 5 steps each |
| Free plan pages | 3 funnels | 1 landing page, 1 website |
| Ways to sort contacts on free | 1 tag | Unlimited groups |
| Branding on free pages | “Powered by systeme.io” badge | MailerLite logo |
| Building the sign-up page | Template, under 10 minutes | AI builder, about 10 minutes |
| Double opt-in | Off by default | On by default |
| Records to send from our domain | 4 (3 CNAME, 1 DMARC) | 3 (DKIM, SPF, verification) |
| Time until the domain was ready | Most of a day | About 20 minutes |
| Where our first email landed | Gmail inbox | Gmail inbox |
| Cheapest paid plan | $17 a month | $12 a month (500 subscribers) |
We sent one test email from each tool. One inbox result is a good sign, not proof of how a whole list will fare.
Building the sign-up page
Systeme.io gave us a funnel with a sign-up page and a thank-you page. We picked a template, changed the words and published. Two snags: the new headline came out in a colour that was hard to read, and the thank-you step stays a placeholder page until you design it.
MailerLite’s AI builder wrote three full designs in about 30 seconds. They looked more polished than our Systeme.io page, but the copy included a “4.8” rating, a “Request a demo” button and app store badges, none of which we asked for. You save time on layout and spend some of it checking the words.
Edge: MailerLite for looks, Systeme.io for a page that says only what you wrote.
Getting the first subscriber
Both pages accepted our test sign-up at once.
On Systeme.io, the contact appeared in the list within seconds.
On MailerLite, it did not appear where we looked. Double opt-in is on by default, so new sign-ups wait as “Unconfirmed”, outside the default view, until they click a confirmation email. That is better for list quality, but it looks like a failed sign-up the first time.
Edge: a tie. MailerLite’s default is the safer one; Systeme.io’s is the less confusing one.
Sending from your own domain
This is where the two tools differed most.
Systeme.io needed a verified sender address, then four DNS records. They were live on public DNS within a minute, but Systeme.io checks on its own schedule with no button to re-check, and the domain only turned “Verified” later that day. We wrote the steps up in our Systeme.io custom domain guide.
MailerLite recognised our DNS host, walked us through three records one at a time and gave an SPF value that already included our existing mailbox. A domain can only have one SPF record, so this matters: a careless merge can push your normal email into spam. The domain was authenticated about 20 minutes later and became the default sender, with no separate address to verify.
Edge: MailerLite, clearly.
Writing and sending the first email
Systeme.io sends newsletters to tags, and the free plan gives you one. Tags cannot be created from the newsletter screen. Its simple text editor also dropped characters when we typed long lines quickly.
MailerLite opened a gallery of 130 templates and sent to groups, which are unlimited on the free plan. Before the first send it asked us to confirm we had read a summary of its terms, then held the campaign in the Outbox for about three minutes.
Both emails arrived in the Gmail inbox.
Edge: MailerLite for the editor and for organising subscribers.
Price as your list grows
| Systeme.io | MailerLite | |
|---|---|---|
| Free | 2,000 contacts, unlimited emails | 250 subscribers, 2,500 emails a month |
| First paid plan | $17 a month: 5,000 contacts, unlimited emails | $12 a month: 500 subscribers, 5,000 emails a month |
| Next plan | $47 a month: 10,000 contacts | $25 a month: 500 subscribers, unlimited emails |
| Yearly discount | Two months free | 10% |
The two tools price differently. Systeme.io plans have a fixed price with a contact limit. MailerLite’s price rises with the number of subscribers, so check its pricing slider for your list size. For a list between 250 and 2,000 people, Systeme.io costs nothing and MailerLite does not.
Systeme.io’s plans also include courses, a shop and payments with 0% transaction fees. MailerLite can sell digital products and paid newsletters. We did not test the selling side of either tool.
Our pick
For most people starting a newsletter with no budget, Systeme.io goes further. The free plan holds eight times as many contacts with no monthly email cap, and if you later sell a course, it is already in the account. Expect a slower first setup and a single tag.
MailerLite is the better email tool. The domain setup is the clearest we have tested, the editor is nicer, and groups are unlimited. Its free plan is a trial run more than a home, so choose it if you expect to pay once your list takes off.
Ready to start? Start on the Systeme.io free plan, or try MailerLite free. Neither asks for a card.