Useful for a real ongoing workflow.
GetResponse, Kit and MailerLite currently provide ongoing $0 account options, although their subscriber, sending and feature limits differ substantially.
Free Email Software
Free email marketing software: what do the free plans actually limit?
A $0 price does not mean unlimited email marketing. Free plans can restrict subscriber count, monthly sends, automation, sequences, reporting, support, branding or the length of time you can use the product. The important question is whether the free tier supports the workflow you actually need.
The first distinction
“Free plan” and “free trial” are not the same product.
A permanent free plan can remain usable without payment as long as the account stays within its limits. A trial is temporary access intended to help you evaluate a paid product before the test period ends.
Useful for proving whether a paid system fits.
ActiveCampaign currently provides a 14-day trial rather than a permanent free tier. That can still be valuable for testing a critical workflow before paying.
Do not rank these products by the word “free.” First decide whether you
need an ongoing zero-cost system or a temporary environment for evaluating more advanced paid capability.
Current free-plan snapshot
Four products, four very different definitions of free.
These limits are current as of the fact-check date above. Free-plan terms are volatile and should be rechecked before signup or migration.
Permanent free plan
Kit
Kit currently offers the largest subscriber ceiling of the four products examined here, but the free plan is intentionally centered on audience growth and broadcasts rather than automated sequences.
$0 while staying at or below 10,000 subscribers
Unlimited email broadcasts
Unlimited forms and landing pages
Audience tagging and segmentation
Broadcast A/B testing
API access
Digital products and subscriptions
Support remains available on the Free plan
Main limitation: visual automations, automation templates, email
sequences, rules and RSS campaigns require a paid plan.
Permanent free account
GetResponse
GetResponse combines a permanent free account with an initial 14-day period that exposes substantially more premium functionality.
Up to 500 contacts
Up to 2,500 messages per month
Newsletter sending remains available after the premium period
Contact import, export and management remain available
Forms and lead collection remain part of the free-account model
Premium capability can be tested during the first 14 days
Main limitation: after the initial 14 days, autoresponder and
automation sending is disabled, published workflows are switched off, message reports are unavailable,
and free-account messages carry GetResponse branding.
Permanent free plan
MailerLite
MailerLite substantially revised its Free plan in June 2026. The current version has a smaller subscriber ceiling than before, while opening additional creation tools.
Up to 250 active subscribers
Up to 2,500 emails per month
Two user seats
Up to three automations
Up to three signup forms
One landing page
One website, up to five pages
One digital product or booking
Main limitation: the 250-active-subscriber ceiling is low. If the
account exceeds it, campaign and automation sending can be locked until the list is reduced or the
account upgrades.
Trial · not permanent free
ActiveCampaign
ActiveCampaign's current zero-cost option is an evaluation period rather than an ongoing free email plan.
14-day trial
No credit card required to begin
Up to 100 email sends during the trial
Trial capability is based broadly on Professional-plan features
Trial accounts are limited to one user
Sending-domain verification matters for test sending
Main limitation: the trial expires. ActiveCampaign is useful here
as a test environment for advanced automation—not as a permanent $0 production email platform.
What free plans really limit
Subscriber count is only one of the constraints.
A free plan can support thousands of subscribers and still be a poor fit when the workflow requires functionality the vendor reserves for paid plans.
1
Subscriber ceiling
The number of active or billable people the account can manage may determine how soon payment becomes mandatory.
2
Monthly sends
A list can fit within the subscriber limit but still outgrow the plan if campaigns and automated messages exceed the sending allowance.
3
Automation
Some free plans allow limited automations, some reserve sequences for paid tiers, and some make automation primarily a trial feature.
4
Reporting
Advanced reporting, comparative analysis, revenue tracking or even basic message reports can be gated.
5
Branding
Free accounts may place vendor branding on messages, forms, pages or other public-facing assets.
6
Support
Free users can receive different support channels or response priority than paid customers.
7
Team access
Additional seats, roles and permissions can turn an otherwise workable free plan into a paid requirement.
8
Integrations
APIs, webhooks, ecommerce features and deeper integrations may be absent, restricted or available only during a trial.
9
Growth transition
The most important limit can be what happens after you exceed the free tier—not what you receive while you remain inside it.
Subscriber limits
The highest free subscriber ceiling does not automatically mean the most capable free plan.
Kit's current 10,000-subscriber allowance is dramatically larger than the permanent free limits from GetResponse and MailerLite. But the capabilities available to those subscribers are also different.
Large free audience, simpler automation.
Kit allows a substantial audience and unlimited broadcasts at $0, while sequences and visual automations move to the paid plans. That can fit a broadcast-led publisher better than an automation-heavy business.
Small free audience, some automation.
MailerLite's permanent free tier allows only 250 active subscribers, but currently includes as many as three automations. The audience ceiling may arrive before the feature ceiling.
Small free audience, broadcast-focused after trial.
GetResponse supports up to 500 contacts, but much of the automation and reporting capability visible during the first 14 days does not remain active on the permanent free account.
Deeper evaluation, no permanent free production tier.
The 14-day trial can help evaluate automation and orchestration, but a successful trial implies moving to a paid plan rather than remaining indefinitely at $0.
Automation is the dividing line
Free broadcasting and free automation are very different propositions.
For many small businesses, the point at which a free plan becomes insufficient is not subscriber count. It is the moment the business needs reliable event-driven follow-up.
Broadcast-only workflowA newsletter sent manually to an audience can remain compatible with a simpler free plan for much longer.
Welcome sequenceIf every new subscriber needs several timed emails, sequence availability becomes a meaningful plan requirement.
Behavioral routingClicks, purchases, tags, conditions and branching can move the business beyond free-plan capability quickly.
Compare the workflow, not the checkbox. “Automation included” does not tell
you how many automations you can run, which triggers are available, how deeply they can branch, or whether the
feature remains available after a trial expires.
Match the free option to the job
Different free options make sense for different tests.
These are directional fits based on the current free-plan structure, not universal product rankings.
Kit is structurally interesting.
Its 10,000-subscriber ceiling and unlimited broadcasts provide substantial room for a publisher whose immediate need is audience growth and regular newsletters rather than automated sequences.
MailerLite's free structure is worth examining.
Up to three automations can support an early workflow, although the current 250-active-subscriber ceiling creates a relatively early growth boundary.
GetResponse can remain usable at $0.
The permanent free account can support a small audience and newsletter sending, but do not confuse the first 14 days of premium access with what remains available afterward.
ActiveCampaign's trial serves a different purpose.
A business considering a paid automation platform can use the temporary trial to prove critical workflows before committing, rather than treating it as a free production solution.
When $0 becomes expensive
The wrong free platform can cost more later than choosing carefully now.
Free is valuable when it lets the business prove a workflow without creating unnecessary future migration.
1
Premature migration
Building an audience on a free tier you already know cannot support next year's required workflow can create avoidable switching work.
2
Rebuilding automation
Contact records may export while sequences, branches, forms and configured logic need to be rebuilt manually elsewhere.
3
Domain work
Moving production sending can require new sender verification, domain authentication and testing.
4
Integration replacement
Website forms, checkout tools, analytics, CRMs and other systems may need to be reconnected.
5
Learning cost
A second platform means learning a second interface and operating model after the business has already learned the first.
6
Lost history
Historical reporting and configured account context may not move as cleanly as the contact database itself.
Free does not override policy
A technically capable free account can still be wrong for your business model.
Pricing and features are only part of the decision. Acceptable-use rules, content policies and subscriber-acquisition requirements can determine whether a platform is usable at any price.
Content fitDoes the provider permit the type of editorial, commercial or promotional email you intend to send?
Consent fitCan your subscriber-acquisition process satisfy the provider's current requirements?
Business-model fitAre affiliate, ecommerce, creator, agency or other relevant activities actually allowed?
StackEvidence has seen this matter in practice. Our email-platform
research treats written policy evidence separately from pricing and features because a generous plan is not
useful when the intended operating model is not permitted.
A better free-plan decision
Choose the free tier that proves the right thing.
A free account is most valuable when it reduces uncertainty about a workflow that matters to the business.
1
DefineWrite the workflow you need now.
2
EstimateModel subscribers and monthly sending.
3
VerifyCheck policy and required features.
4
TestProve the critical workflow at small scale.
5
ProjectUnderstand what triggers the first paid upgrade.
The best free plan is not necessarily the one that stays free longest. It
is the one that lets you validate the right system with the least unnecessary migration and lock-in.
Questions to answer before signup
Find the upgrade trigger before building the account.
What counts toward the subscriber limit?Active contacts, inactive contacts and duplicate records may not be treated the same across providers.
What counts toward monthly sends?Broadcasts, automation messages and other message types may share the same allowance.
Does automation remain after the trial?Do not design around temporary premium access.
Which public assets carry vendor branding?Free branding can matter when the system becomes customer-facing.
What happens when the limit is exceeded?Sending may stop, new contacts may queue, or an upgrade may become necessary.
What is the first paid plan you would actually need?The future usable-plan price matters more than the current $0 sticker.
Current conclusions
There is no single “best free email marketing software” without a workflow.
The four current options emphasize different things, which is more useful than forcing them into one universal ranking.
If audience ceiling matters most
Kit
The current 10,000-subscriber Free plan provides substantial room for audience growth and broadcasting.
Automated sequences and visual automations are the important paid-plan boundary.
If limited free automation matters
MailerLite
The current free plan includes three automations and useful creation tools.
The 250-active-subscriber ceiling creates an early growth constraint.
If basic newsletters are enough
GetResponse
Its permanent free account can support a small newsletter audience after the premium trial ends.
Do not assume the premium automation and reporting seen during the first 14 days
will remain.
If you are evaluating advanced paid automation
ActiveCampaign
Its zero-cost option is best understood as a controlled evaluation environment rather than a permanent free email system.
If the test succeeds, plan for a paid subscription.
These are plan-structure conclusions, not overall product rankings.
Policy fit, usability, migration, integrations, support and the paid plan you eventually need can change the
final decision.
Evidence standard
Free-plan comparisons go stale quickly.
StackEvidence rechecked the current vendor-controlled pricing and help documentation for this page on October 7, 2026. Exact limits should be verified again before a migration or purchase because vendors can change free plans without preserving older limits for new accounts.
GetResponseCurrent Free-account documentation, message-limit documentation and pricing/help materials.
ActiveCampaignCurrent free-trial documentation and current plan documentation.
KitCurrent Kit Free-plan help documentation and pricing page.
MailerLiteCurrent pricing, June 2026 Free-plan update and current plan/billing documentation.
No affiliate weightingFree-plan generosity is evaluated independently from affiliate commissions or program availability.
Commercial transparency
A $0 plan should not be used as bait for a paid recommendation.
This page contains no affiliate links. The purpose is to show where the current free tiers stop so a reader can decide whether beginning free creates a sensible path or merely postpones an inevitable migration.
Next step: once you know the required workflow, compare the full product research
rather than choosing from the free-plan limits alone.