7 Best AI Marketing Automation Tools

How we chose

Marketing automation pricing is really a list-size question: the same tool can cost $15 or $145 depending on how many contacts you hold. The seven tools below are compared at a stated 5,000-contact list, and ranked on the AI job each does best — what the AI actually decides for you, what the entry plan costs at that size, and what the plan leaves out. Every figure comes from the vendor's own pricing page, checked on 13 November 2026. Free plans and trials are noted where they exist.

AI marketing automation is software that sends the right message to the right person without a human pressing send each time. The AI part is not the writing: it is the decision. Predictive sending chooses the hour a person is most likely to open, and churn prediction flags who is drifting away. A tool that only drafts subject lines is an email tool with an AI add-on, not an automation platform.

1. HubSpot Marketing Hub: best for a full CRM and marketing platform

HubSpot Marketing Hub is the most complete platform on this list, because it sits on top of HubSpot CRM. Marketing, sales, service and content share one contact record, so a lead's email opens, website visits and sales calls all appear in the same place.

Marketing Hub Starter costs $20 per seat a month, and includes 1,000 marketing contacts. Professional starts at $890 a month, billed annually, and includes 3 core seats and 2,000 marketing contacts, plus a required $3,000 one-time onboarding fee. Enterprise starts at $3,600 a month, with 5 core seats, 10,000 marketing contacts and a $7,000 onboarding fee.

The weakness is the price cliff. Moving from Starter at $20 a seat to Professional at $890 a month is a jump of more than 40 times, and there is no intermediate tier. Professional also requires annual billing, so you commit for a year. Skip HubSpot if you only need email automation, or if your list is under 2,000 contacts and a cheaper tool covers the same workflows.

2. ActiveCampaign: best for automation depth for mid-size teams

ActiveCampaign has the deepest automation builder in the mid-market. Its visual workflow builder supports conditional content, predictive sending, advanced segmentation, attribution and goal tracking, and its AI content generation sits inside the same workflows.

ActiveCampaign Starter costs $15 a month billed annually, or $19 month to month, at 1,000 contacts. Plus costs $49 a month billed annually, or $59 month to month, at 1,000 contacts. Professional costs $79 a month billed annually, or $99 month to month, at 1,000 contacts. Enterprise starts at $145 a month billed annually at 1,000 contacts. Send limits are 10 times your contact count on Starter and Plus, 12 times on Professional and 15 times on Enterprise.

The weakness is how the bill grows. At 10,000 contacts, Starter costs $189 a month month to month, Plus $239 and Professional $469. Clean your list before you migrate. Skip ActiveCampaign if your list is large and your automations are simple, because Brevo or Omnisend will be cheaper for the same sends.

3. Brevo: best for low-cost email automation

Brevo, formerly Sendinblue, charges by emails sent, not by contacts stored, which makes it the cheapest entry point on this list for a small sender. Starter starts at $9 a month for 5,000 emails, Standard starts at $18 a month for 5,000 emails, and the free plan sends 300 emails a day with up to 100,000 contacts stored.

Brevo's AI features include an AI content generator, send-time optimisation and predictive sending on higher plans, but its real strength is the pricing model. A list of 5,000 contacts that only receives one email a month costs $9 on Brevo, while the same list costs far more on a contact-based tool. That suits newsletters, announcements and low-frequency senders.

The weakness is the contact caps hidden in the lower tiers. At the 5,000-email tier, Starter allows only 500 contacts, so a 1,200-contact list needs a higher tier even if it sends rarely. SMS and WhatsApp are billed separately. Skip Brevo if you send frequently to a large list, because the per-email model stops being cheap at volume, or if you need deep CRM features that HubSpot and ActiveCampaign include.

4. Klaviyo: best for ecommerce email and SMS

Klaviyo is built for online stores, and it shows in the data it uses. It segments by purchase history, browsing behaviour, predicted lifetime value and churn risk, and its flows for abandoned carts, post-purchase follow-up and win-back campaigns are the reason most Shopify and WooCommerce stores choose it.

Klaviyo Email starts at $20 a month for 251 to 500 active profiles, with 5,000 monthly sends. At 1,000 active profiles it costs $30 a month, at 5,000 it costs $100, and at 10,000 it costs $150. Email plus SMS starts at $35 a month for 251 to 500 profiles, with 1,250 SMS credits. The free plan covers up to 250 active profiles, 500 emails a month and 150 SMS credits. Klaviyo bills on active profiles, defined as contacts that can receive marketing, and suppressed profiles are not billed.

The weakness is the billing change that arrived in 2025. Klaviyo now charges for every active profile in your database, whether or not you emailed them that month, so a large list of lapsed buyers costs money every month. Skip Klaviyo if you do not sell online, because its ecommerce features are wasted on a newsletter, or if your list is mostly inactive and you do not want to pay for it.

5. Mailchimp: best for simple newsletters and small lists

Mailchimp is the simplest tool on this list to start with, and the most familiar. It covers newsletters, basic automation, landing pages and audience segmentation, with AI writing assistance, predictive segmentation and dynamic content on Standard and above.

Mailchimp Essentials starts at $13 a month for 500 contacts, Standard at $20 a month for 500 contacts, and Premium at $350 a month for 10,000 contacts. The free plan covers up to 250 contacts and 500 sends a month, with a 250-a-day cap. Send allowances are 10 times your contact count on Essentials, 12 times on Standard and 15 times on Premium. Essentials caps automations at four steps, which is the main reason growing senders move to Standard.

The weakness is price growth. At 5,000 contacts, Standard costs $100 a month, and at 10,000 it costs $135. Skip Mailchimp if you need deep automation, because ActiveCampaign does more for less at the same list size, or if your list is large and growing fast.

6. Omnisend: best for Shopify stores on a budget

Omnisend is an email and SMS platform built specifically for ecommerce, with deep Shopify integration and pre-built workflows for abandoned carts, welcome series and post-purchase follow-up. Its AI features include product recommendations, send-time optimisation and AI-written subject lines.

Omnisend Standard starts at $16 a month for 500 contacts, with 6,000 emails a month, or 12 times your contact count. Pro starts at $59 a month, covers up to 2,500 contacts, and offers unlimited emails plus SMS credits equal to your monthly bill. The free plan covers up to 250 contacts, 500 emails a month and 500 web push notifications, with every core feature included. At 10,000 contacts, Standard costs about $132 a month and Pro about $150.

The weakness is SMS. Since May 2026, SMS is only available on the Pro plan for new accounts, so a Standard customer who wants text messages must upgrade. Skip Omnisend if you do not sell online, or if you need SMS on a low-cost plan, because Klaviyo includes SMS from its entry paid tier.

7. Salesforce Marketing Cloud: best for enterprise teams already on Salesforce

Salesforce Marketing Cloud, now sold as Marketing Cloud Next, is the enterprise pick. It covers multi-channel journeys, agentic content creation, email, SMS, WhatsApp and RCS on the same Salesforce data, with the same security and compliance controls. It suits a company that already runs sales and service on Salesforce and wants marketing on the same data.

Marketing Cloud Next Growth Edition costs $1,500 per org a month, billed annually. Advanced Edition costs $3,250 per org a month, billed annually. Prices are per org, not per user, on an annual contract, with SMS, WhatsApp, extra email, Agentforce requests, Data 360 profiles and extra business units charged on top. There is no free plan and no self-serve trial.

The weakness is cost and complexity. Growth Edition at $18,000 a year before add-ons is more than ten times the cost of ActiveCampaign Professional for a similar contact count, and implementation usually needs a partner or a dedicated admin. Skip Salesforce Marketing Cloud unless your company already runs on Salesforce, sends at enterprise volume, or needs the compliance and scale that only an enterprise platform provides.

How to choose

A worked cost example

Take a business with 5,000 contacts that sends four emails a month to the whole list, or 20,000 emails a month. On Brevo, that volume sits at the 20,000-email tier: Starter costs $29 a month and Standard $65 a month. On ActiveCampaign at 5,000 contacts, Starter costs $99 a month month to month, Plus $179 and Professional $259. On Klaviyo at 5,000 active profiles, Email costs $100 a month. On Mailchimp at 5,000 contacts, Essentials costs $75 a month and Standard $100. On Omnisend at 5,000 contacts, Standard costs about $81 a month and Pro $90. The cheapest option for this sender is Brevo Starter at $29, and the most expensive is ActiveCampaign Professional at $259, a difference of $2,760 a year for the same 20,000 emails.

Common mistakes with AI marketing automation

• Paying for AI writing and ignoring automation. A subject-line generator does not replace a welcome series. Judge a tool on its workflows, triggers and segmentation, not on its writing demo.
• Migrating a dirty list. ActiveCampaign, Mailchimp and Klaviyo all charge for contacts you do not mail, including unsubscribed and inactive ones. Archive or delete them before you move, not after.
• Buying Professional before you need it. HubSpot Professional at $890 a month plus $3,000 onboarding is a different purchase from Starter at $20 a seat. Start on the lower tier and upgrade when a specific feature is blocked.
• Forgetting SMS costs. SMS credits are billed separately on most tools, and Klaviyo requires a minimum SMS spend once you turn SMS on. Price email and SMS together, not separately.
• Skipping the exit plan. Automation logic rarely imports cleanly. Export contacts, templates and suppression lists before you cancel, and run both tools for one campaign cycle.

For email basics, see the best mass email service, the best email marketing platforms for newsletters, and the email marketing funnel. Adziq's email service covers automation setup, the guide on email automations for an online store walks through the flows that matter, and the best AI marketing platform compares the wider category.

Common questions

Sources

• HubSpot — Marketing Hub pricing
• ActiveCampaign — Pricing
• Brevo — Pricing
• Klaviyo — Pricing
• Mailchimp — Marketing pricing
• Omnisend — Pricing
• Salesforce — Marketing Cloud pricing

Adziq sells marketing services and does not accept payment for placement in its articles. See our editorial policy.