Best email marketing tool for small business
A practical guide to picking an email marketing platform for a small business — balancing free-plan generosity, automation, and cost as your list grows.
Email is still the highest-ROI channel for most small businesses, but plans vary wildly in free limits and how fast price climbs with subscribers. Here's our 2026 pick by scenario, plus a full candidate comparison.
MailerLite
A clean drag-and-drop editor, solid automation, and the lowest prices for small lists — the best all-round value for small business email.
Visit MailerLiteBest picks by scenario
MailerLite
A clean drag-and-drop editor, solid automation, and the lowest prices for small lists — the best all-round value for small business email.
Visit MailerLiteBrevo
The most generous free plan: up to 100K contacts and ~9,000 emails/month free, with email, SMS, and chat in one platform.
Visit BrevoKit (formerly ConvertKit)
Unlimited emails for up to 10,000 subscribers free; subscriber-first pricing and automation built for creators and newsletter publishers.
Visit Kit (formerly ConvertKit)Candidates compared
| Tool | Price | Best for | Pros / Cons |
|---|---|---|---|
| MailerLite | Free (250 subs, 2,500 emails/mo); Comfort from $12/mo; Power from $25/mo | Budget small-business email | Clean drag-and-drop editor · Lowest prices for small lists · Solid automation triggers Small free tier (250 subs) · Advanced features need Power plan |
| Brevo | Free (100K contacts, 300 emails/day); Starter $9/mo; Business $18/mo | Multi-channel on a budget | Generous free tier · Cheap at volume · Email + SMS + WhatsApp + chat Marketing automation capped on Starter · Weaker at very large batch sends |
| Mailchimp | Free (250 contacts, 1,000 emails/mo); Essentials from $13/mo; Standard from $20/mo | Beginners & established integrations | Familiar UI · Huge integration library · Journey builder on Standard+ Price climbs fast with contacts (~$100/mo at 10K) · Automation gated behind Standard |
| Kit (formerly ConvertKit) | Free up to 10,000 subs (unlimited emails); Creator from $33/mo | Creators & newsletter publishers | Most generous free tier · Subscriber-first pricing · Best-in-class creator automation Weaker for classic ecommerce/D2C · Less suited to mass email marketing |
| ActiveCampaign | Starter $19/mo (monthly) / $15/mo (annual, 1,000 contacts); Plus ~$49/mo | Advanced automation + small CRM | Powerful automation engine · Built-in email + CRM + SMS · Scales with sophistication Pricier than MailerLite/Brevo · Steeper learning curve |
What to look for
Free tier generosity
For a small business starting out, free contacts and monthly sends decide whether you pay early — compare limits, not just price.
Automation depth
Look for journeys, triggers, tags, and segmentation — automation is where email marketing ROI comes from as you grow.
Price at scale
Contact-based pricing (Mailchimp, Kit) can climb fast; send-volume pricing (Brevo) is cheaper for large lists. Model your cost at 1K-10K contacts.
Deliverability & integrations
Good delivery rates and links to your CRM, store, or landing pages matter as much as features — check the ecosystem before committing.
Frequently asked questions
Q: Which email tool has the most generous free plan?
A: Kit (formerly ConvertKit) — up to 10,000 subscribers free with unlimited emails — and Brevo — up to 100,000 contacts free with a daily send cap.
Q: Is Mailchimp still worth it for a small business?
A: It's familiar and well-integrated, but contact-based pricing climbs fast (roughly $100/mo at 10K contacts). MailerLite and Brevo are usually cheaper for the same job.
Q: When should we move to a paid plan?
A: When you exceed the free sends or contacts, need advanced automation (journeys, tags, segmentation), or want to remove branding.
Methodology & transparency
Ranks email marketing tools for small businesses based on emailvendorselection.com pricing guides (Aug 9, 2026), automationatlas.io pricing re-verifications (Jul 2026), and comparedge.com Kit pricing (Jul 2026).