Last verified: 2026-04-25
Best Free Email Marketing Tools for 2026
Bottom line up front
For most operations under 1,000 subscribers, MailerLite Free is the structural answer — 1,000 subscribers, 12,000 emails/month, full automation builder, strong deliverability. Brevo (formerly Sendinblue) Free is the runner-up with unlimited subscribers and a 300-emails/day cap. For creators and content publishers, Kit (formerly ConvertKit) Free at 10,000 subscribers (no paid features on free) is the right fit. Mailchimp's free tier shrunk to 500 contacts in 2024 — less competitive than alternatives.
Why "free" matters more in email than other categories
Email marketing only pays back at scale — a 200-subscriber list generates marginal revenue, a 5,000-subscriber list generates real revenue, a 50,000-subscriber list compounds. Paying $20-$200/mo for email marketing before you've built a list is the wrong order of operations. Free tiers let you launch the list, test content, observe whether subscribers convert, and only commit to paid when subscriber count justifies it. The five platforms below all let you do that without sunset clauses.
The trade is feature caps. Free tiers limit subscriber count, monthly send volume, automation triggers, custom-domain branding, or API access. The smart play is matching the cap to your current state — a creator launching a newsletter doesn't need Mailchimp's enterprise tier; they need a free tier with a clear upgrade path.
How we picked
Five criteria. (1) Permanent free tier (not a 14-day trial). (2) Subscriber cap of at least 500 with reasonable monthly send limit. (3) Drag-and-drop email designer. (4) Basic automation (welcome series, abandoned-cart flows). (5) Documented deliverability above 90%. Every pick clears all five.
At a glance
| Platform | Subscriber cap | Send limit | Best for |
|---|---|---|---|
| MailerLite Free | 1,000 subscribers | 12,000 emails/mo | Most operations under 1K |
| Brevo Free | Unlimited subscribers | 300 emails/day | Unlimited contacts daily-cap |
| Kit Free | 10,000 subscribers (no paid features) | Unlimited sends | Creators and publishers |
| Mailchimp Free | 500 contacts | 1,000 emails/mo | Brand recognition |
| Sender Free | 2,500 subscribers | 15,000 emails/mo | Smaller operations clean UI |
1. MailerLite Free — the structural default
Best for: Most operations under 1,000 subscribers wanting full feature access.
MailerLite Free is the most generous and credible free email marketing tier. 1,000 subscribers, 12,000 emails/month, full drag-and-drop email designer, basic automation (welcome series, abandoned-cart for e-commerce integrations), landing pages, and forms. Strong deliverability backed by the platform's aggregate reputation.
Upgrade trigger: cross 1,000 subscribers and Growing Business at $9/mo unlocks the cap.
Pros: Most generous free tier; full feature access; clean UI.
Cons: 1,000-subscriber cap; cheapest paid tier at $9/mo (still cheap).
2. Brevo (Sendinblue) Free — unlimited subscribers
Best for: Operations wanting unlimited subscribers but accepting a daily send cap.
Brevo (formerly Sendinblue) takes a different approach — unlimited subscribers but capped at 300 emails per day on free. For low-frequency newsletter senders (weekly or bi-weekly), 300/day × 30 days = 9,000 emails/month is comparable to MailerLite's cap. For higher-frequency senders, the daily cap bites.
Pros: Unlimited subscribers; transactional email + marketing in one platform.
Cons: 300/day cap restricts frequency; UI complexity from doing both marketing + transactional.
3. Kit (ConvertKit) Free — creators and publishers
Best for: Creators, content publishers, newsletter writers under 10,000 subscribers wanting Kit's creator-focused UX.
Kit Free supports up to 10,000 subscribers with unlimited sends but no paid features (no automation, no segmentation beyond basic, no custom domains). For creators starting a newsletter, Kit's UX is more polished than Mailchimp's, with creator-specific features (paid newsletters, product sales) lighting up at paid tiers.
Upgrade trigger: Creator at $25/mo unlocks automations, segmentation, and most paid features.
Pros: 10,000-subscriber cap is highest free tier; creator-focused UX.
Cons: No automation on free; paid features locked.
4. Mailchimp Free — brand recognition
Best for: Operators wanting Mailchimp brand recognition under 500-contact limit.
Mailchimp's free tier shrunk to 500 contacts and 1,000 emails/month in 2024. Brand recognition is real but the free-tier limits are now uncompetitive vs. MailerLite. For new operations, MailerLite or Kit are structurally better; Mailchimp Free remains common because of inertia.
Pros: Brand recognition; mature platform.
Cons: 500-contact cap; expensive paid tiers; UI complexity.
5. Sender Free — clean UI alternative
Best for: Smaller operations wanting cleaner UI than Mailchimp at higher free tier than MailerLite.
Sender's free tier supports 2,500 subscribers and 15,000 emails/month — between MailerLite (1K) and Brevo (unlimited daily-capped). Cleaner UI than Mailchimp; smaller install base.
Decision tree: which free email tool should I pick?
- Most operations under 1K subscribers → MailerLite Free.
- Unlimited subscribers, low-frequency sends → Brevo Free.
- Creator/publisher under 10K subscribers → Kit Free.
- Mailchimp brand recognition under 500 contacts → Mailchimp Free.
- 2,500-subscriber cap with clean UI → Sender Free.
Frequently asked
What is the best truly-free email marketing platform in 2026?
For up to 1,000 subscribers, MailerLite Free is the structural answer — generous limits (12,000 emails/mo), strong deliverability, full automation builder, and clean upgrade path. Brevo (formerly Sendinblue) Free is competitive at 300 emails/day with unlimited subscribers. Mailchimp Free dropped to 500 contacts in 2024 (down from 2,000) which makes it less competitive. Kit (formerly ConvertKit) Free supports unlimited subscribers up to 10,000 contacts but limits paid features.
How are these platforms genuinely free vs. trial-disguised-as-free?
All five in this list have permanent free tiers. MailerLite, Brevo, Kit, Sender all stay free indefinitely with subscriber caps. Mailchimp's free tier shrunk significantly in 2024 but is still permanent. The catches are caps, not sunsets. Most platforms upgrade you when you cross the cap (subscriber count, monthly send limit, or feature requirement).
What's the catch on free email marketing tools?
Three typical gates. (1) Subscriber cap: 250-2,000 contacts on free, you upgrade when you cross. (2) Send limit: 300 emails/day or 12,000/month on free, you upgrade for higher volume. (3) Feature gates: automation triggers, advanced segmentation, custom domains, and API access typically gated to paid tiers. For early-stage operations under 1,000 subscribers, the free tiers are fully functional; above that, you'll upgrade.
Will free email marketing have good deliverability?
On reputable platforms, yes. MailerLite, Brevo, Kit, and Mailchimp all maintain shared sending IPs with active reputation management — your free-tier sends benefit from the platform's aggregate reputation. Where deliverability gets bad: unknown free email tools (avoid anything outside the major brands), self-hosted SMTP, or sending from your domain via your hosting provider's email. The 95%+ deliverability rate of major platforms applies even on free tiers.
Should I use email marketing free tier or transactional email service free tier?
Different products. Email marketing tools (MailerLite, Mailchimp) are for marketing newsletters — bulk sends, segmentation, automation. Transactional email services (Postmark, SendGrid, Mailgun) are for system emails — order confirmations, password resets. Most businesses use both: email marketing for newsletters, transactional service for system mail. Don't try to send transactional email through a marketing tool — it'll affect your sender reputation and break deliverability.
Can I export my subscriber list if I switch platforms?
Yes on every reputable platform. MailerLite, Mailchimp, Kit, Brevo all support CSV export of your contact list with custom fields. The data you can't take with you: open rates, click history, automation state, and segment definitions — these stay with the source platform. Plan migrations to a stable destination because re-segmenting and re-establishing automation logic is the migration's real cost.
Sources
- MailerLite Pricing — verified 2026-04-25
- Brevo Pricing — verified 2026-04-25
- Kit Pricing — verified 2026-04-25
- Mailchimp Pricing — verified 2026-04-25