Email & SMS Marketing
AI Email Marketing Software: Plan Limits Compared
Part of the guide: Email & SMS Marketing
Here is the number that decides most software choices for a local business: 1,000 contacts times four emails a month is 4,000 sends. Mailchimp's free plan allows 500 a month, MailerLite's free plan allows 2,500 and HubSpot's free tools allow 2,000. So before you compare AI writing assistants, check whether the plan can even send your newsletter. The AI part is a bonus. The send cap, the contact cap and the automation cap are what you actually run into.
This guide is for salons, studios, cafes, groomers and other local businesses in the US, UK, Australia and Canada. It compares six platforms by the limits their own pricing pages show, explains which AI features sit behind which plan, covers the sender rules that now apply to everyone, and ends with the break-even math. If you run a coffee shop, our AI email marketing guide for coffee shops goes deeper on cafe-specific automations; this page is the cross-tool comparison.
What the Plan Pages Say
Vendors change plans often, and several show prices only after you pick a contact tier, so the figures below are the ones visible on each vendor's page when this article was updated. Where a price was not displayed, the table says so rather than guessing.
250→
Free contacts, Mailchimp and MailerLite
Vendor pricing pages
500→
Mailchimp free sends / month
Max 500 a month or 250 a day
2,500→
MailerLite free sends / month
Vendor pricing page
2,000→
HubSpot free sends / month
Vendor pricing page
Estimates for illustration; actual numbers vary.
| Tool | Free plan limits | Paid plans (as shown) | AI features, per the page |
|---|---|---|---|
| Mailchimp | 250 contacts; 500 sends a month or 250 a day; no automation flows or SMS | Essentials $13/month and Standard $20/month, quoted as promotional for 12 months; Premium $350/month | Generative AI listed on Standard and Premium, not Free or Essentials |
| MailerLite | 250 subscribers; 2,500 emails a month; 3 automations | Comfort from $12/month, Power from $25/month | AI writing assistant listed on Comfort and Power; Free does not list it |
| Brevo (second-hand) | 300 emails a day; Brevo branding stays | Starter from $9/month for 5,000 sends; Standard from $18/month | Not confirmed on the sources opened |
| Klaviyo | 250 active profiles; 500 sends a month; $5 of SMS and $5 of Composer (AI) usage a month | Paid prices not displayed | Composer and Customer Agent listed, plan split not shown |
| HubSpot | 2,000 sends a month with HubSpot branding; 1 automated action | Marketing Hub Starter listed from $7 per seat per month, with a new-customer promotion | Credit-based: Starter includes 500 credits a month, extra credits $0.010 each |
| ActiveCampaign | No free plan; 14-day trial | Starter, Plus, Pro, Enterprise, all billed annually; prices not displayed | Limited AI on Starter and Plus, unlimited on Pro and Enterprise; predictive sending on Pro and Enterprise only |
Sources for each row are listed at the end. Two caveats. Brevo's own pricing page would not load for this review, so its row comes from a third-party review last updated in January 2026; confirm on Brevo's site. And Constant Contact's pricing page was also not accessible, so it is left out rather than quoted from memory.
Do the Send-Cap Arithmetic First
Sends needed per month equals contacts times emails per person. The table assumes four emails a month per contact, which is my assumption for a weekly newsletter or equivalent automations.
| Your list | Sends a month | Free plans that clear it |
|---|---|---|
| 250 contacts | 1,000 | MailerLite (2,500), HubSpot (2,000), Brevo (300 a day covers a 250-person send) |
| 1,000 contacts | 4,000 | None cleanly. Brevo's 300-a-day cap means each 1,000-person send is spread over about four days |
| 3,000 contacts | 12,000 | None |
Mailchimp's page also gives paid caps as multiples of your contact count: 10 times for Essentials, 12 times for Standard and 15 times for Premium. At 1,000 contacts, that is 10,000 to 15,000 sends a month, well above the 4,000 in this example.
Three practical points follow:
- Free is a trial, not a plan. Three of the vendors above cap free accounts at 250 contacts or profiles. Grow past that and you pay, so pick a tool you are happy to pay for.
- Brevo prices by volume, not contacts. The third-party review says costs rise with send volume rather than stored contacts. That suits a large, rarely emailed list; it suits a small, frequently emailed one less.
- Automation caps hide in the small print. MailerLite Free allows 3 active automations. HubSpot Free allows 1 automated action. ActiveCampaign Starter allows 5 actions per automation. A welcome series, a rebooking reminder and a win-back flow can use all of that quickly.
For a plain-English comparison of two of the bigger names, see Mailchimp vs Klaviyo for small business.
What the AI Features Are Actually Worth
Strip the marketing and AI in these tools mostly means three things:
- Drafting. Subject lines, preview text and first drafts from a prompt. Useful for a business owner who dreads blank pages. Mailchimp and MailerLite put this on paid plans; HubSpot and Klaviyo meter it by credits.
- Predictive sending and segments. ActiveCampaign lists predictive sending only on Pro and Enterprise. These features generally need history and volume to work, so a 600-person cafe list is unlikely to benefit. That is my judgement, not a vendor claim.
- Ready-made automations. Welcome, abandoned cart, win-back. This is where the real time saving sits, and you do not need an AI label to get it.
The honest ranking for a small list: automation limits matter more than AI features, and AI drafting matters more than predictive anything. Our email automation sequences guide shows the three flows worth building first.
The Rules That Apply Whatever Tool You Pick
Software does not carry your legal responsibility. The FTC's CAN-SPAM compliance guide says:
- Each email needs accurate header information, a non-deceptive subject line, clear disclosure that it is an ad and a valid postal address.
- Opt-out requests must be honoured within 10 business days, and the opt-out mechanism must keep working for at least 30 days after sending.
- Hiring someone else to send your email does not transfer your responsibility.
- Each violating email can carry a penalty of up to $53,088.
UK, Australian and Canadian recipients fall under their own consent rules, which differ from CAN-SPAM, so check local guidance before importing a list. The email marketing for small business playbook covers the basics.
On deliverability, Google's email sender guidelines say all senders to Gmail need SPF or DKIM authentication, and keep spam rates in Postmaster Tools below 0.3%, with the guidance to stay under 0.10%. Bulk senders (over 5,000 messages a day) additionally need DMARC and one-click unsubscribe. A single-location business will sit far below that bulk threshold, but setting up SPF, DKIM and DMARC through your platform's instructions costs 20 minutes and is worth it anyway.
Pick by Business Type
- Salon or groomer with 300 to 1,500 clients: your key feature is a reminder or rebooking nudge tied to your booking system. Check what your booking tool already sends before paying twice. Our AI automation for hair salons guide covers that split.
- Cafe or bakery with a loyalty crowd: a paid MailerLite or Mailchimp tier is plenty; see the coffee shop guide.
- Studio with trials and lapsed members: you need conditional logic (if no booking in 30 days, send X), which points to a plan with generous automation caps.
- Shop selling products online: purchase-based segmentation is the reason to look at Klaviyo.
- You want email, SMS and a CRM in one: HubSpot and ActiveCampaign sell that, at a higher price and a steeper learning curve than a newsletter tool.
The Math
Replace every assumption with your own numbers. The aim is to find how many extra repeat visits a month pay for the software.
| Cheap tool | Mid tool | Heavy tool | |
|---|---|---|---|
| Monthly software cost (assumption) | $20 | $50 | $150 |
| Your time: 3 hours at $20 (assumption) | $60 | $60 | $60 |
| Total monthly cost | $80 | $110 | $210 |
| Margin per extra repeat visit (assumption) | $25 | $25 | $25 |
| Extra visits needed to break even | 3.2 | 4.4 | 8.4 |
The takeaway: the software fee is rarely the issue. Your time is usually the bigger cost, and a heavy tool needs about eight extra visits a month, which a list of a few hundred people can deliver only if the emails are timely and relevant. If you cannot name how many visits email brought in last month, start by asking "did an email bring you in?" at checkout for 30 days.
Pay for Automations, Not Adjectives
A welcome email, a post-visit follow-up and a win-back message do more than any AI feature. Pick the cheapest plan that lets you run those three and clears your send cap.
Do This Today
- Count your contacts and decide how many emails a month each should get. Multiply them to get your monthly sends.
- Compare that number with the send cap and contact cap on each vendor's live pricing page. Write down the automation limit too.
- Run a free trial and build one real welcome email. Do not migrate your whole list yet.
- Set up SPF, DKIM and DMARC for your sending domain using the platform's own instructions, and add a postal address and working unsubscribe link to your template.
- Ask every customer for a month how they heard about you, and log which ones came back after an email.
FAQ
Q: Do I need AI features in my email software?
A: No. Automations, deliverability and list management matter more. AI drafting saves time, and per the vendor pages it sits on paid plans in Mailchimp and MailerLite and on credits in HubSpot and Klaviyo.
Q: What is the cheapest option for a list of 1,000 people?
A: Free plans do not cover it on the limits shown, since Mailchimp, MailerLite and Klaviyo cap free accounts at 250 contacts or profiles. Brevo's free plan has a 300-a-day send cap rather than a contact cap, per a third-party review. Compare paid tiers at 1,000 contacts on the live pages.
Q: Is email still worth it compared with social media?
A: For many local businesses yes, because you own the list. Use social to grow it and email to bring people back.
Q: Can I switch platforms later?
A: Yes. Export contacts, consent records and unsubscribes first, rebuild only the automations that earn their keep, and send gradually from the new platform.
Q: What is the legal minimum for marketing email in the US?
A: Under CAN-SPAM, accurate headers, a clear ad disclosure, a postal address and an opt-out honoured within 10 business days. Recipients in the UK, Australia and Canada fall under separate consent rules.
Sources
- Mailchimp: Marketing plans and pricing
- MailerLite: Pricing
- Klaviyo: Pricing
- ActiveCampaign: Pricing
- HubSpot: Marketing Hub Starter pricing
- Brevo pricing review, ecommerce-platforms.com, updated January 2026 (second-hand; Brevo's own page was not accessible)
- FTC: CAN-SPAM Act compliance guide for business
- Google Workspace Admin Help: Email sender guidelines
Want the welcome, rebooking and win-back flows built and tested for you? See our email and SMS marketing service, the hair salons page, or contact DataLatte.
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Nataliia
Local marketing strategist with 10+ years at global agencies — OMD, Dentsu, GroupM, and BBDO. Now helping small businesses get the same data-driven edge. Based in Europe, working with clients in the US, UK, Australia, and beyond.
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