Systeme.io vs MailerLite vs Kit: the same newsletter test on three free plans
We gave three email tools the same job: a sign-up page, a subscriber and a first email from our own domain. Which free plan goes furthest, and which is easiest.
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Kit has the biggest free list and the fastest domain setup, but no automations until you pay $33 a month. Systeme.io is the best free all-rounder, with an automation rule and courses built in. MailerLite is the cheapest to grow on once you pay, from $12 a month.
We tested three email tools on 14 November 2026 with exactly the same job: build a sign-up page,
collect a test subscriber and send them a first email from our own domain, tooldebrief.com. This
page puts the results side by side. For the full story of each test, read our reviews of
Systeme.io, MailerLite and
Kit.
The short answer
- Choose Kit if you want a plain newsletter that can grow for free. Its free plan holds up to 10,000 subscribers, and its domain setup was the quickest we have seen. You send every email by hand until you pay.
- Choose Systeme.io if you want one free account that can also run a course, a shop or a sales page later, and one automation to send a welcome email on its own.
- Choose MailerLite if email is the whole job and you are happy to pay early: it has the nicest editor and the cheapest first paid plan.
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 | Kit | |
|---|---|---|---|
| Free plan list size | 2,000 contacts | 250 subscribers | Up to 10,000 subscribers |
| Free plan emails | Unlimited | 2,500 a month | Unlimited broadcasts |
| Automations on free | 1 rule, 1 email campaign | 3 automations, up to 5 steps each | None |
| Pages on free | 3 funnels | 1 landing page | Unlimited landing pages |
| Branding on free | “Powered by systeme.io” badge | MailerLite logo | “Built with Kit” badge |
| How we built the page | Template, under 10 minutes | AI builder, about 10 minutes | Template, about 10 minutes |
| Double opt-in | Off by default | On by default | On by default |
| DNS records we added | 4 | 3 | 3 |
| Time until the domain was ready | Most of a day | About 20 minutes | About 20 seconds |
| Where the first email landed | Inbox | Inbox | Inbox |
| Cheapest paid plan | $17 a month | $12 a month (500 subscribers) | $33 a month (1,000 subscribers) |
We tested MailerLite during its 14-day trial and the other two on their free plans. We sent one test email from each tool, to a Gmail inbox for Systeme.io and MailerLite and to our own mailbox for Kit. An inbox result is a good sign, not proof of how a whole list will fare.
Building the sign-up page
Systeme.io and Kit both start from templates. You click into the text and type over it. Both pages were live in about 10 minutes. Systeme.io’s thank-you step is a blank placeholder until you design it; Kit’s editor puts the page, the thank-you message and the confirmation email in three tabs, so nothing is left behind.
MailerLite’s AI builder wrote three full designs in about 30 seconds and they looked the most polished. The copy also included a “4.8” rating, a “Request a demo” button and app store badges, none of which we asked for.
Edge: Kit, for a tidy page with only the words we wrote, and everything a subscriber sees in one place.
Getting the first subscriber
All three pages accepted our sign-up straight away.
Systeme.io added the contact to the list within seconds, with no confirmation email.
MailerLite and Kit both use double opt-in by default: the subscriber gets an email and joins the list only after clicking the link in it. That keeps fake and mistyped addresses off your list. MailerLite hides unconfirmed sign-ups from the default subscriber view, which looked like a failed sign-up at first.
Kit had a surprise of its own. Before our thank-you message, it showed our new subscriber a pop-up recommending other creators’ newsletters, in our case about cooking and baking. This is Kit’s Recommendations network, switched on for new accounts. You can turn it off under Recommendations, then Settings.
Edge: Systeme.io for the simplest first experience, as long as you are happy without double opt-in.
Sending from your own domain
This step separated the three tools more than any other.
Kit asked for three CNAME records and a DMARC record. Because its SPF record is a CNAME on its own name, it does not touch the SPF record you already have. We kept our existing DMARC record, added the three CNAMEs, and Kit verified the domain about 20 seconds after we clicked Validate.
MailerLite recognised our DNS host and walked us through three records, one at a time. Its SPF value already included our existing mailbox, which matters because a domain can only have one SPF record. The domain was ready in about 20 minutes.
Systeme.io needed a verified sender address, then four DNS records. They were live within a minute, but Systeme.io checks on its own schedule with no button to re-check, and the domain was verified only later that day. Our Systeme.io custom domain guide has every step.
Edge: Kit, with MailerLite close behind.
Writing and sending the first email
Systeme.io sends newsletters to tags, and the free plan gives you one. Its simple text editor dropped characters when we typed long lines quickly.
MailerLite offers 130 templates and sends to groups, which are unlimited on the free plan. Before the first send it asked us to confirm we had read its terms, then held the email for about three minutes.
Kit starts each broadcast from a template; we used plain text. Tags and segments are unlimited on the free plan, and a review screen before every send shows the subject, sender and number of recipients. One snag: Kit’s support chat bubble sat on top of the Continue button, so our clicks did nothing until we closed it.
All three emails arrived in the inbox, not spam.
Edge: MailerLite for the editor, Kit for the safest send step.
Price as your list grows
| Systeme.io | MailerLite | Kit | |
|---|---|---|---|
| Free | 2,000 contacts, unlimited emails | 250 subscribers, 2,500 emails a month | Up to 10,000 subscribers, no automations |
| First paid plan | $17 a month: 5,000 contacts | $12 a month: 500 subscribers | $33 a month: 1,000 subscribers |
| Next plan | $47 a month: 10,000 contacts | $25 a month: 500 subscribers, unlimited emails | $66 a month: 1,000 subscribers |
| Yearly discount | Two months free | 10% | About 17% |
The three tools charge in different ways. Systeme.io plans have a fixed price with a contact limit. MailerLite and Kit charge more as your list grows, so check their pricing sliders for your list size.
What this means in practice:
- Up to 250 people: all three are free.
- 250 to 2,000 people: Systeme.io and Kit are free; MailerLite is not.
- 2,000 to 10,000 people: only Kit is still free, but with no automations.
- If you want automations for free: MailerLite’s free plan has three and Systeme.io’s has one rule. Kit has none until its $33-a-month Creator plan.
Our pick
For a free newsletter you will send by hand, pick Kit. No other free plan we tested holds as many subscribers or set up our domain as quickly. Turn off Recommendations before you share your page.
For a free account that does more than email, pick Systeme.io. You get one automation rule, and courses, a shop and payments are in the same account. Expect a slower domain setup and a single tag.
For the best email tool on a small budget, pick MailerLite. The free plan is small, but the editor is the nicest and the first paid plan is the cheapest of the three.
None of the three asks for a card to start: start on the Systeme.io free plan, try MailerLite free or start with Kit’s free plan.