Last verified: October 8, 2026
Most roundups of marketing automation software for small businesses quote the starting price and stop. Startups don't pay starting prices for long. This list prices 10 tools at 1,000 contacts and 10,000 contacts, flags the ones whose pricing punishes list growth, and shows which ones your AI agents can connect to over MCP.
Find more marketing and growth tools on Maarket → Marketing and growth
Quick Answer
The best marketing automation tools for startups in 2026 are Loops (B2B SaaS, free up to 1,000 subscribed contacts), Brevo (cheapest at 10,000 contacts because it bills on emails sent), Customer.io (product-event automation, about $145/month at 10,000 profiles), beehiiv (newsletter-led growth, automations from $49/month billed yearly) and Klaviyo (ecommerce). HubSpot is the strongest all-in-one, but Starter costs about $410/month at 10,000 marketing contacts, the steepest growth curve on this list.
Marketing automation tools at a glance
| Tool | Starts at | Best for | Agent-ready / MCP |
|---|---|---|---|
| Brevo | Free (300 emails/day); Standard from $18/mo | Large lists, low send volume | Yes, MCP for ChatGPT and Claude |
| Loops | Free up to 1,000 subscribed contacts | B2B SaaS lifecycle and product email | Yes, official MCP server |
| Mailchimp | Free up to 250 contacts; Standard from $20/mo | Simple newsletters and small-business campaigns | Partial, official MCP covers Mandrill transactional only |
| beehiiv | Free up to 2,500 subscribers; Lite $49/mo billed yearly | Newsletter-led and creator-led startups | Yes, beehiiv MCP on Lite and up |
| Customer.io | $100/mo (Essentials, 5,000 profiles) | Product-led startups automating on in-app events | Yes, MCP server on every plan |
| Klaviyo | Free up to 250 active profiles | DTC and Shopify ecommerce | Yes, official remote MCP server |
| ActiveCampaign | $15/mo billed yearly (Starter, 1,000 contacts) | SMBs wanting deep automation plus light CRM | Yes, Claude and ChatGPT via MCP |
| Encharge | $79/mo billed yearly (Growth, 2,000 subscribers) | B2B SaaS behavior-based onboarding | No official server (third-party only) |
| Ortto | $169/mo billed yearly (Starter) | Data-led teams wanting CDP plus journeys | Yes, official MCP server since Nov 2025 |
| HubSpot Marketing Hub | Free; Starter $20/seat/mo list | Startups that want CRM, marketing and sales in one place | Yes, official remote MCP server |
Why this list matters
Entry prices at 250 or 500 contacts tell a startup almost nothing about next year's bill. This list prices every tool at 10,000 contacts, spells out what each vendor actually bills on (some count unsubscribed contacts, some don't), and marks every price we could not read directly on the vendor's own page.
Price at 1,000 vs 10,000 contacts
"Growth multiple" is how much your monthly bill multiplies when your list grows 10x. Each tool is shown on the cheapest plan that includes multi-step automation; a free plan is used only where it includes automation. Prices are monthly-billing list prices unless marked "yearly".
| Tool (plan) | 1,000 contacts | 10,000 contacts | Growth multiple | What you're billed on | Growth flag |
|---|---|---|---|---|---|
| Brevo (Free → Standard) | $0 | ~$65 to $69† | n/a | Emails sent, with contact storage caps per send tier | Growth-friendly |
| Loops (Free → paid) | $0 | $99† | n/a | Subscribed contacts only | Growth-friendly |
| Mailchimp (Standard) | $45† | $135† | 3x | All contacts, including unsubscribed | Punishes growth (counts unsubscribes) |
| beehiiv (Lite) | $49 yearly | ~$139† | ~2.8x | Subscribers | Neutral |
| Customer.io (Essentials) | $100 | $145 | 1.45x | Profiles (people plus objects) | Growth-friendly |
| Klaviyo (Email) | $30† | $150† | 5x | Active profiles (anyone you can message) | Punishes growth |
| ActiveCampaign (Plus) | $59($49 yearly)† | $239($189 yearly)† | 4x | Contacts | Punishes growth |
| Encharge (Growth) | $99($79 yearly) | $249($199 yearly)‡ | 2.5x | Subscribers, unsubscribes excluded | Neutral, high floor |
| Ortto (Starter) | $199†($169 yearly) | $237 yearly | ~1.4x | Contacts, minimum 5,000 band | Neutral, high floor |
| HubSpot (Marketing Hub Starter, 1 seat) | $20 | ~$410 | ~20x | Marketing contacts plus seats | Punishes growth |
† The vendor shows this tier only in an interactive price slider. The figure was matched across two or more independent 2026 pricing trackers on October 8, 2026; confirm on the vendor's page before buying. ‡ Calculated from Encharge's published price ladder and its tier labels.
A tool "punishes growth" here if the bill grows 4x or more from 1,000 to 10,000 contacts, or if it bills for contacts you can't email. Send-based and subscribed-only billing (Brevo, Loops) stays cheapest as lists grow. Per-contact ladders with small steps (HubSpot Starter, Klaviyo, ActiveCampaign) climb fastest.
The 10 best marketing automation tools for startups, ordered by cost at 10,000 contacts
Ordered from cheapest to most expensive at 10,000 contacts on monthly billing. Cheapest isn't automatically best, so check each tool's "best for" line.
1. Brevo
What it is: An email, SMS and WhatsApp marketing platform (formerly Sendinblue) that bills on emails sent, not contacts stored.
Pricing: Free sends 300 emails a day, stores up to 100,000 contacts and runs automation for up to 2,000 contacts. Standard starts at $18/month. Paid storage follows your send tier: 500 contacts at 5,000 sends, 1,500 at 10,000 sends and 500,000 from 20,000 sends up. A 10,000-contact list on the 20,000-send Standard tier costs about $65 to $69/month†.
Standout: Unlimited automation on Standard, and MCP access for ChatGPT and Claude from Starter.
Best for: Startups with large lists and modest send frequency.
Source: Brevo pricing · Brevo plan details
2. Loops
What it is: An email platform built for SaaS companies, covering campaigns, lifecycle workflows and transactional email.
Pricing: Free for up to 1,000 subscribed contacts and 4,000 sends in any rolling 30 days, with all features and a small Loops footer. Paid plans bill on subscribed contacts only, with unlimited sends and no seat fees: $99/month up to 10,000†.
Standout: Unsubscribed contacts aren't billed, transactional email is included, and Loops ships an official MCP server, CLI and agent skills.
Best for: Early-stage B2B SaaS teams that want product and marketing email in one tool.
Source: Loops pricing · Loops for agents
3. Mailchimp
What it is: The best-known email marketing platform, owned by Intuit, with automation flows, forms, landing pages and SMS add-ons.
Pricing: Free covers 250 contacts and 500 sends a month. Standard starts at $20/month for 500 contacts and runs about $45/month at 1,000 and $135/month at 10,000†.
Standout: Mailchimp bills on subscribed, unsubscribed and non-subscribed contacts; only archived, cleaned and deleted contacts are excluded. Essentials caps automation flows at 4 steps.
Best for: Small teams sending newsletters and simple welcome flows who will archive unsubscribes monthly.
Source: Mailchimp pricing · Mailchimp plan definitions · Mailchimp on Maarket
4. beehiiv
What it is: A newsletter platform that bundles a website, podcast, community, digital products and an ad network.
Pricing: Free up to 2,500 subscribers, but automations start on Lite at $49/month billed yearly for 1,000 subscribers. New plans took effect for new customers on October 1, 2026, and Lite at 10,000 subscribers was reported at about $139/month†.
Standout: Unlimited sends on every plan, 0% take on paid subscriptions, and the beehiiv MCP server from Lite.
Best for: Startups whose growth engine is a newsletter.
Source: beehiiv pricing
5. Customer.io
What it is: A messaging platform that triggers email, push, SMS, in-app and WhatsApp messages from product events.
Pricing: Essentials is $100/month with 5,000 profiles (people plus objects) and 1 million emails. Extra profiles cost $0.009 each, so 10,000 profiles is about $145/month.
Standout: Unlimited seats, an MCP server on every plan, and 12 months free for startups that have raised under $10M.
Best for: Product-led startups with an engineer who can send events.
Source: Customer.io pricing
6. Klaviyo
What it is: A B2C CRM for email, SMS, push and WhatsApp, built around ecommerce data from Shopify and other store platforms.
Pricing: Free up to 250 active profiles and 500 sends a month. The Email plan is about $30/month at 1,000 active profiles and $150/month at 10,000†.
Standout: Automation built on store data and an official remote MCP server. Klaviyo bills on active profiles, meaning anyone you could message.
Best for: DTC and Shopify startups that prioritize revenue attribution over price.
Source: Klaviyo pricing · Klaviyo MCP server · Klaviyo on Maarket
7. ActiveCampaign
What it is: A marketing automation platform with a visual journey builder, email, landing pages and optional CRM pipelines.
Pricing: Starter is $15/month billed yearly at 1,000 contacts but limits each automation to 5 actions. Plus is $49/month billed yearly ($59 monthly) at 1,000 contacts and about $189 yearly ($239 monthly) at 10,000†.
Standout: Unlimited automation actions from Plus, 950+ automation recipes and Claude and ChatGPT connections via MCP.
Best for: SMBs that want branching automation and accept a per-contact bill.
Source: ActiveCampaign pricing
8. Encharge
What it is: A marketing automation platform for B2B SaaS, built around behavior-based emails from product and billing events.
Pricing: Growth is $99/month($79 billed yearly) for up to 2,000 subscribers, with a 14-day trial and no free plan. At 10,000 subscribers, Growth is $249/month($199 billed yearly)‡.
Standout: Unsubscribed and archived people aren't billed, flows and seats are unlimited, and Stripe, Chargebee and Segment integrate natively. No official MCP server yet.
Best for: B2B SaaS teams automating onboarding and trial conversion.
Source: Encharge pricing · Encharge pricing explained
9. Ortto
What it is: A marketing automation platform with a built-in customer data platform, journeys, SMS and analytics (formerly Autopilot).
Pricing: Starter is $169/month billed yearly at its lowest 5,000-contact band and $237/month billed yearly at 10,000 contacts. Yearly billing saves 15%.
Standout: CDP, journeys and attribution in one tool, plus an official MCP server launched in November 2025.
Best for: Data-led teams past early traction that want one system for audience data and journeys.
Source: Ortto pricing · Ortto MCP
10. HubSpot Marketing Hub
What it is: The marketing layer of HubSpot's customer platform, with email, forms, landing pages, ads and workflows on HubSpot's Smart CRM.
Pricing: Free tools cover 1,000 contacts and 2,000 sends a month. Starter lists at $20/seat/month with 1,000 marketing contacts; extra contacts cost $50 per 1,000 up to 3,000, $45 up to 5,000 and $40 beyond, so 10,000 contacts on one seat is about $410/month. Professional starts at $890/month plus a $3,000 onboarding fee.
Standout: One CRM across marketing, sales and service, an official remote MCP server and HubSpot for Startups discounts. Starter caps email automation at 10 actions.
Best for: Funded startups that want CRM and marketing together from day one. Comparing options? See our HubSpot alternatives for startups.
Source: HubSpot pricing · HubSpot product catalog · HubSpot on Maarket
What types of marketing automation tools should you consider?
| Category | Representative tools |
|---|---|
| Send-based email automation tools | Brevo |
| SaaS lifecycle and product email | Loops, Encharge |
| Event-driven, multichannel messaging | Customer.io |
| Newsletter platforms with automation | beehiiv |
| Ecommerce marketing automation | Klaviyo |
| Small-business email marketing | Mailchimp |
| Automation plus light CRM | ActiveCampaign |
| CDP-led marketing automation | Ortto |
| All-in-one CRM and marketing suites | HubSpot Marketing Hub |
Why price at 10,000 contacts matters
A startup's list usually grows faster than its revenue, so the contact count drives the bill long before marketing proves its return. Pricing a tool at 10,000 contacts shows what you'll pay once inbound starts working, and the billable-contact rules decide whether unsubscribes and stale profiles cost you money.
Price is also a snapshot. A one-time comparison, including this one, is out of date the next time a vendor reprices; beehiiv changed its plans on October 1, 2026. Maarket ranks tools continuously on real usage signals such as reviews, "I use this" votes and recommendations, plus agent-readiness, so rankings move as teams adopt and drop tools.
The best choice usually balances three things: cost at your 12-month list size, automation that fires on the right events, and agent support. Optimizing for price alone tends to mean a migration within a year.
How to choose a marketing automation tool for your startup
- Price your 12-month list. If you expect 10,000 contacts within a year, use the 10,000-contact column.
- Read the billable-contact definition. Mailchimp bills for unsubscribed contacts and Klaviyo for anyone you could message, while Loops and Encharge exclude unsubscribes.
- Match the trigger source. Product events point to Customer.io, Loops or Encharge; store events to Klaviyo; CRM stages to HubSpot or ActiveCampaign.
- Check entry-plan automation caps: 5 actions per automation on ActiveCampaign Starter, 4 flow steps on Mailchimp Essentials, 10 automated actions on HubSpot Starter, 2,000 contacts on Brevo Free and Starter.
- Check agent readiness. Eight of these 10 tools have an official MCP server or connection.
- Plan your switch point. Switching is cheapest before you have dozens of live flows, so move when your projected 12-month bill doubles or your automation hits a plan cap.
- Ask about startup programs. Customer.io offers 12 months free under $10M raised, and HubSpot runs HubSpot for Startups discounts.
How we built this list
Scope: the 10 marketing automation and email automation tools listed for this roundup on Maarket. We read each vendor's pricing page, help center and developer docs on October 8, 2026, and recorded the price at 1,000 and 10,000 contacts on the cheapest plan with multi-step automation, the billable-contact definition, entry-plan automation caps and official MCP support. Prices marked † come from interactive sliders and were matched across independent 2026 trackers; the price marked ‡ was calculated from published vendor data. Prices exclude taxes, SMS credits and add-ons.
Last reviewed: October 8, 2026
Frequently asked questions
What is the cheapest marketing automation tool for a startup?
At 1,000 contacts, Brevo Free (300 emails a day, automation for up to 2,000 contacts) and Loops Free (1,000 subscribed contacts, 4,000 sends per rolling 30 days) cost $0. At 10,000 contacts, Brevo is the cheapest tool in this comparison at about $65 to $69/month because it bills on emails sent rather than contacts stored.
Is HubSpot worth it for an early-stage startup?
HubSpot is worth it if you need a CRM and marketing on one platform and qualify for HubSpot for Startups pricing. If you only need email automation, a CRM can wait: Marketing Hub Starter rises from $20/month at 1,000 marketing contacts to about $410/month at 10,000 on one seat, and caps email automation at 10 actions.
Do email automation tools charge for unsubscribed contacts?
Some do. Mailchimp bills on subscribed, unsubscribed and non-subscribed contacts, excluding only archived, cleaned and deleted ones. Klaviyo bills on active profiles, meaning anyone you could message. Loops bills only subscribed contacts, and Encharge excludes unsubscribed and archived people.
What's the best HubSpot alternative for a startup?
The best HubSpot alternative depends on the job HubSpot was doing. For SaaS lifecycle email, choose a product-event tool; for branching automation with light CRM, choose ActiveCampaign Plus from $49/month billed yearly; for the lowest cost on a large list, choose a send-based tool. Our HubSpot alternatives for startups guide compares them in detail.
Which marketing automation tools work with AI agents via MCP?
As of October 8, 2026, eight of the 10 tools in this list document an official MCP server or connection: HubSpot, Klaviyo, Customer.io, Loops, Brevo, beehiiv (Lite and up), ActiveCampaign and Ortto. Mailchimp's official MCP server covers only Mandrill transactional email, and Encharge relies on third-party MCP servers.
Still choosing a marketing automation tool?
Maarket ranks marketing and growth tools continuously on real usage signals, plus agent-readiness and MCP support, so the rankings move as teams adopt and drop tools.