AI email marketing tools use machine learning to write subject lines, personalize messages, pick send times, and automate follow-ups, so a small business can run campaigns that used to take a full marketing team. For a one- or two-person shop, the right pick depends less on flashy features and more on your list size and your budget.
10 AI email marketing tools at a glance
Prices come from each vendor’s own pricing page, checked October 9, 2026, at the smallest list size. Most charge more as your list grows, so confirm before you sign up.
| Tool | Best for | How it charges (as of October 2026) | Free plan or trial | The catch |
|---|---|---|---|---|
| Mailchimp | Starting a list at $0 | By contacts: Essentials from $13 a month, Standard from $20 | Free plan (250 contacts, 500 sends a month) | Generative AI starts on Standard, not Essentials |
| Klaviyo | Online stores | By active profiles; check current pricing | Free plan (250 profiles, 500 sends a month) | Built for ecommerce data, less useful without a store |
| ActiveCampaign | Deeper automation | By contacts and plan; check current pricing | 14-day trial, no card needed | No free plan; Starter has limited AI |
| Brevo | Low cost with a big contact list | By email volume: Starter from $9 a month, Standard from $18 | Free plan (300 emails a day) | Daily send cap on the free plan |
| HubSpot | Businesses that want email and a CRM together | Per seat: Starter $20 a seat a month (less on annual), Professional $800 a month | Free tools (2,000 sends a month) | Big price jump from Starter to Professional |
| Constant Contact | Local businesses that want hand-holding | By contacts: Lite from $12 a month, Standard $35, Premium $80 | Free trial, no card needed | No free plan |
| MailerLite | Simple newsletters on a budget | By subscribers: from $12 a month on paid plans | Free plan (250 subscribers, 2,500 emails a month) | AI writing assistant is paid plans only |
| GetResponse | Unlimited sends with webinars and landing pages | By contacts: Starter from $19 a month, Marketer from $59 | Free plan and 14-day trial | Starter limits how often you can use the AI generators |
| Kit | Newsletters, coaches and creators | By subscribers: Creator from $33 a month | Free plan (up to 10,000 subscribers), 14-day trial on paid | Built for creators, light on ecommerce |
| Omnisend | Shopify and other online stores on a budget | By contacts: Standard from $16 a month, Pro from $59 | Free plan (250 contacts, 500 emails a month) | AI send time and product picks are Pro only |
What AI actually does in an email marketing tool
Strip away the marketing language and AI in email tools does a handful of concrete jobs:
- Writes drafts. You give it a topic (a sale, a new hire, a seasonal reminder) and it produces subject lines and body copy you edit rather than write from scratch.
- Picks send times. It looks at when each contact has opened email before and times the send to that person instead of blasting everyone at 9am.
- Segments your list automatically. Instead of you manually tagging customers, it groups people by behavior, like who clicked but didn’t buy.
- Runs follow-up sequences. Set up one welcome or thank-you sequence once, and it fires automatically when someone joins your list or buys something.
- Flags what might hurt deliverability. Some tools scan a draft for spammy phrasing or formatting before you hit send.
None of this replaces knowing your customers. It removes the busywork of writing every email and every send-time decision by hand.
Best AI email marketing tools for a small business, compared
These are the tools that show up across most comparisons. Everything below comes from each vendor’s own pricing and feature pages as of October 2026. Start with the one that fits how you sell.
1. Mailchimp
The best-known email platform, with AI writing built into its paid plans.
Best for: a small list where you want to start at $0.
Price: Free plan up to 250 contacts and 500 sends a month; Essentials from $13 a month; Standard from $20 a month; Premium from $350 a month (as of October 2026).
Pros:
- Lowest-risk way to start: the free plan needs no payment.
- Generative AI is included on Standard and Premium at no added charge.
- Standard has a 14-day free trial.
Cons:
- No AI writing on the Free or Essentials plans.
- Predictive segmentation is a Premium feature.
Check before you buy: price your real contact count on the pricing page, since the starting price covers only the smallest list.
2. Klaviyo
An email and text platform built around online store data.
Best for: shops selling on Shopify or a similar store.
Price: free plan up to 250 active profiles and 500 email sends a month; paid plans are priced by active profiles, so check current pricing for your list size.
Pros:
- The free plan includes an AI subject line generator.
- Free plan also includes $5 a month of usage for Composer, its AI tool.
- Emails can be tied to browsing and purchase behavior.
Cons:
- Much of its value depends on having store data connected.
- Once you pass 250 profiles or 500 sends, you have to upgrade to keep sending.
Check before you buy: confirm it connects to your store platform and see what your profile count costs on the pricing calculator.
3. ActiveCampaign
An automation-first email platform with AI branded “Active Intelligence.”
Best for: businesses ready to pay for multi-step automations based on what customers do.
Price: no permanent free plan; priced by plan and contact count, so check current pricing (as of October 2026).
Pros:
- AI content generation and predictive sending on Plus, Pro and Enterprise.
- Lists an AI campaign builder and AI automation builder on higher plans.
- 14-day free trial with no credit card needed.
Cons:
- Starter has limited AI access and only 5 actions per automation.
- More than a business sending one newsletter a month needs.
Check before you buy: during the trial, build the one automation you actually need and see which plan it requires.
4. Brevo
A low-cost email, text and chat platform that charges by email volume.
Best for: businesses with a large contact list that email it occasionally.
Price: free plan up to 300 emails a day; Starter from $9 a month; Standard from $18 a month (as of October 2026).
Pros:
- Lists an AI content generator for subject lines and email copy, including tone changes.
- Lists AI send time optimization and AI segmentation suggestions.
- Paid plans start low.
Cons:
- The free plan’s 300-a-day cap means a big list takes days to reach.
- Some AI features sit on higher plans; confirm which plan includes the one you want.
Check before you buy: work out your monthly send volume, since that, not contacts, drives the price.
5. HubSpot
A CRM with email marketing built in, with AI features powered by monthly credits.
Best for: businesses that want email, contacts and sales follow-up in one place.
Price: free tools with 2,000 email sends a month (with HubSpot branding); Marketing Hub Starter $20 a seat a month, lower on an annual commitment, with 1,000 marketing contacts; Professional from $800 a month with 3 seats (as of October 2026).
Pros:
- Free tools are useful on their own, up to 2 users.
- Paid plans include monthly HubSpot Credits for AI features (500 on Starter).
- Email ties straight into your contact records.
Cons:
- The jump from Starter to Professional is large.
- Free emails carry HubSpot branding.
Check before you buy: decide whether you need the CRM. If you only want newsletters, a simpler tool costs less.
6. Constant Contact
A long-running email platform aimed at small and local businesses, with live onboarding.
Best for: owners who want setup help and email, social and events in one tool.
Price: Lite $12 a month, Standard $35, Premium $80, billed monthly, less when prepaid for a year (as of October 2026).
Pros:
- AI copy generator listed on all plans.
- Free trial with no credit card needed.
- 30-day refund window after you start paying, per its pricing page.
Cons:
- No free plan to stay on.
- Prices are based on contacts and email sends, and overage fees may apply.
Check before you buy: ask what happens if you go over your contact or send limit in a busy month.
7. MailerLite
A simple, budget-friendly email tool where every paid plan gets the full feature set.
Best for: straightforward newsletters and announcements on a small budget.
Price: free plan up to 250 subscribers and 2,500 emails a month; paid plans from $12 a month, with a 10% discount for annual billing (as of October 2026).
Pros:
- AI writing assistant, subject line generator and smart sending on paid plans.
- Generous free email allowance for a small list.
- 14-day trial of premium features.
Cons:
- No AI writing assistant on the free plan; the subject line generator is limited there.
- Fewer ecommerce features than Klaviyo or Omnisend.
Check before you buy: use the 14-day trial to draft a real email with the AI assistant and see if the copy sounds like you.
8. GetResponse
An email platform with unlimited sends on paid plans, plus landing pages, webinars and courses.
Best for: businesses that also want landing pages or webinars in the same tool.
Price: free plan available; Starter $19 a month ($15.58 a month paid annually); Marketer $59 a month ($48.38 paid annually), at 1,000 contacts (as of October 2026).
Pros:
- Unlimited monthly email sends on paid plans.
- AI email and subject line generators, unlimited on Marketer.
- 14-day free trial of premium features.
Cons:
- Starter caps the AI email and subject line generators at 3 uses each.
- Free plan emails carry a GetResponse badge.
Check before you buy: if AI writing is the reason you’re buying, budget for Marketer, not Starter.
9. Kit
An email platform for creators (formerly ConvertKit) with a large free plan.
Best for: coaches, consultants, instructors and anyone whose business runs on a newsletter.
Price: free up to 10,000 subscribers; Creator $33 a month (or $390 a year); Pro $66 a month (as of October 2026).
Pros:
- AI subject line writing and testing inside the email designer, per Kit.
- An AI chat that drafts broadcast emails from a prompt.
- Connects to ChatGPT, Claude and Gemini through its MCP connector.
Cons:
- Its pricing page doesn’t say which plans include each AI feature.
- Built for creators, so store and product features are lighter.
Check before you buy: confirm the AI features you want work on the free plan before you upgrade.
10. Omnisend
An email and text platform for online stores, with AI forms and reports on every plan.
Best for: Shopify and other online stores watching costs.
Price: free plan up to 250 contacts and 500 emails a month; Standard from $16 a month; Pro from $59 a month, both shown with 30% off the first 3 months when we checked (as of October 2026).
Pros:
- Forms AI and Reports AI on every plan, including free.
- Pro adds personalized send times, dynamic content and AI product recommendations.
- Pro includes unlimited email sends (fair use applies).
Cons:
- The useful AI features for stores are Pro only.
- Less useful if you don’t sell online.
Check before you buy: note the price after the intro discount ends, not just the first three months.
How to choose
- Start with how you sell. Online store: Klaviyo or Omnisend. Newsletter-driven business: Kit or MailerLite. Want a CRM too: HubSpot.
- Count your contacts and sends. Most tools price by contacts, Brevo by email volume and HubSpot by seats. Price your real numbers, not the starting tier.
- Check where the AI lives. On several tools the AI writer is missing from the free or cheapest plan. Look at the plan you’ll actually pay for.
- Write one real email on the free plan or trial. If the AI draft needs a full rewrite to sound like you, it won’t save time.
A quick match:
- Just starting, want $0: Mailchimp, MailerLite or Kit.
- Online store: Klaviyo or Omnisend.
- Big list, occasional sends: Brevo.
- Want setup help: Constant Contact.
- Ready for serious automation: ActiveCampaign.
- Need a CRM too: HubSpot.
- Want webinars and landing pages too: GetResponse.
Setting up your first AI email campaign
- Pick one tool based on list size. Under a few hundred contacts and just getting started, a free plan from Mailchimp, Klaviyo, MailerLite or Kit is enough. Don’t pay for automation you don’t have the list to use yet.
- Import your list and clean it. Remove bounced or fake addresses before your first send. A clean small list beats a messy big one.
- Set up sender authentication. Every major provider walks you through adding SPF, DKIM, and DMARC records to your domain during setup. Skip this and your emails are more likely to land in spam no matter how good the AI copy is.
- Build one automated sequence first. A welcome email for new subscribers or a thank-you after a purchase is the highest-value automation to set up before anything fancier.
- Use the AI draft as a starting point, not a final answer. Generate a subject line and body draft, then rewrite anything that sounds generic or doesn’t sound like you.
- Send to a small segment first. Test with a portion of your list before sending to everyone, especially the first few campaigns.
Not sure email is where AI would help you most? Our AI scan shows where it could save your business time first.
What to skip and where AI email marketing hits limits
- AI won’t fix a bad list. If your contacts didn’t opt in or haven’t engaged in years, better subject lines won’t rescue your open rate.
- AI won’t invent an offer worth opening. It can polish how you say something; it can’t make a weak promotion compelling.
- AI-written copy still needs a human read-through. Generic AI phrasing is easy for regular customers to spot, especially from a business they know personally.
- Every commercial email you send is still covered by the CAN-SPAM Act: accurate sender info, no deceptive subject lines, a working opt-out honored within 10 business days, and your real postal address in the email. No AI tool handles this compliance for you automatically; check your settings against the FTC’s guide.
- Free plans cap contacts and sends low on purpose. Budget for a paid plan once your list grows past a couple hundred people if you’re mailing regularly.
- Watch intro discounts and contact tiers. A low starting price often covers only the smallest list, or only the first few months.
How we put this together: We checked each tool’s official pricing and feature pages on October 9, 2026. No vendor paid to be included. Prices change, so confirm on the vendor’s page before you sign up.
Frequently asked questions
Which AI tool is best for email marketing?
For most small businesses, the best one is the tool that fits how you sell. Mailchimp, MailerLite and Kit are easy free starting points, Klaviyo and Omnisend suit online stores, and ActiveCampaign suits deeper automation. Try the AI writer on a free plan or trial before you pay.
Are there free AI email marketing tools?
Yes. Klaviyo’s free plan covers up to 250 profiles and 500 sends a month with an AI subject line generator included. Omnisend’s free plan includes its AI form and report tools, and Kit’s free plan covers up to 10,000 subscribers. Mailchimp’s free plan covers 250 contacts, but its generative AI starts on the paid Standard plan.
What does AI actually do in email marketing?
It drafts subject lines and body copy, times sends to when each contact is likely to open, groups contacts by behavior automatically, and runs follow-up sequences without you managing each send by hand.
Can ChatGPT do email marketing?
ChatGPT can draft subject lines, emails and whole sequences, but it can’t send email, manage your list or handle unsubscribes. You still need an email platform for that. Some, like Brevo and Kit, now connect to ChatGPT and other assistants directly.
Is AI email marketing worth it for a small business?
It’s worth it once you’re sending regularly and don’t have time to write and time every email yourself. If you send one email a month to a small list, a free plan’s basic scheduling may be all you need; AI automation pays off more as your list and send frequency grow.
What is email marketing automation?
It’s a sequence of emails that sends itself based on a trigger, like someone joining your list or buying a product, instead of you manually sending each message. AI adds personalization and timing on top of that automation.
How do I keep emails compliant when using AI?
The same rules apply whether you or an AI wrote the email. Under the CAN-SPAM Act, subject lines can’t mislead, every email needs your postal address and a working unsubscribe, and opt-outs must be honored within 10 business days. Read the FTC’s guide and check with your attorney if you’re unsure.
Sources
- Mailchimp pricing
- Klaviyo pricing
- ActiveCampaign pricing
- Brevo pricing
- HubSpot Marketing Hub pricing
- Constant Contact pricing
- MailerLite pricing
- GetResponse pricing
- Kit pricing
- Kit AI features
- Omnisend pricing
- FTC CAN-SPAM Act compliance guide
For the bigger picture on using AI across your marketing, see our guide to using ChatGPT for marketing at a small business and where to start with AI workflows. For more on getting AI marketing set up, visit our AI marketing for small business hub.
More in this topic: AI Marketing guide.
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