The right Mailchimp alternative depends on why you’re leaving and what you need next. For SaaS lifecycle and automation teams, Customer.io or Loops handle event-triggered onboarding and product-driven workflows that Mailchimp handles awkwardly. For creators and simple senders who want clean newsletters without contact-based price creep, MailerLite or Brevo are the most cost-effective replacements. For developers and SaaS teams who need deeper API integration with templating and automation in one platform, tools like ActiveCampaign, Loops, or Cold Letter are worth evaluating.
Mailchimp is not a bad tool. For small-business newsletters, it has an approachable UI, a large template library, and a brand most marketers already know. The friction starts when you need behavioral triggers tied to product events, when your list grows and you start paying for unsubscribed contacts, or when your team wants API-first integration without fighting a builder-first tool. If what you actually need is transactional rather than marketing email, start with what transactional email is.
Why SaaS Teams Outgrow Mailchimp
Mailchimp prices by contact count, and the model has a well-documented trap: unsubscribed, non-subscribed, and inactive contacts all count toward your plan limit unless you manually archive them. Mailchimp’s own pricing documentation confirms that subscribed, unsubscribed, and non-subscribed contacts all count toward your plan limit, and only archived contacts are excluded from billing. For a growing SaaS company, this means your bill rises even when your engaged audience is flat.
The automation model is also list-first. Mailchimp’s Customer Journey Builder covers time-based sequences and subscriber events well, but event-based segmentation tied to product activity requires the Premium plan. For teams who want to trigger emails when a user skips a setup step, reaches an activation milestone, or invites a teammate, the tooling either isn’t there at lower tiers or requires middleware to bridge the gap.
Mailchimp’s free plan caps at 250 contacts and 500 sends per month (as of 2026), which pushes even early-stage teams onto paid plans quickly.
Where Mailchimp still wins: small-business senders with a stable list, ecommerce stores using Shopify integrations, and marketers who want an approachable drag-and-drop builder without writing code. If that describes your use case, the alternatives below may not be better for you.
Mailchimp Alternatives by Buyer Type
Best for SaaS Lifecycle Automation: Customer.io and Loops
Customer.io was built around event-based messaging from the start. You can trigger workflows off nearly any user action: signup, first activation, skipped onboarding step, usage milestone, or period of inactivity. The platform handles email, SMS, push notifications, and in-app messages from a single workflow builder, which makes it the go-to for product-led SaaS teams that treat lifecycle email as a core product surface. Pricing starts at $100/month for up to 5,000 profiles (as of 2026).
Loops takes a simpler approach, designed specifically for SaaS startups. It unifies marketing campaigns, product event-triggered workflows, and transactional email in one platform, which removes the need to run a separate transactional provider alongside your marketing tool. The free plan includes up to 4,000 sends per month to 1,000 contacts; the first paid tier starts at $49/month. Unlike Mailchimp, transactional email sending is included at no extra charge across all Loops plans.
If you’re comparing tools that handle transactional sending alongside marketing, also see our guide to the best transactional email services.
Best for Creators and Simple Senders: MailerLite and Kit
MailerLite is the most direct Mailchimp replacement for teams that want clean newsletters, forms, and basic automations at a lower price point. The Growing Business plan starts at $10/month for 500 subscribers with unlimited emails; the free plan covers 500 subscribers and 12,000 emails per month, including multi-step automation. Note that in September 2025, MailerLite cut the free plan from 1,000 to 500 subscribers. MailerLite’s pricing page is the authoritative current source for limits and tier details, which change periodically.
Kit (formerly ConvertKit) is built for independent creators and newsletter operators rather than SaaS companies. Its free Newsletter plan supports up to 10,000 subscribers with unlimited forms, landing pages, and broadcasts. The Creator plan (starting at $33/month billed annually for 1,000 subscribers) adds visual automations, sequences, and integrations. Kit’s audience tagging and segmentation model is cleaner than Mailchimp’s for creator use cases, but it is not built around product events or developer API integration.
Best for Cost-Conscious Senders with Large Lists: Brevo
Brevo (formerly Sendinblue) uses a send-volume pricing model rather than charging by contact count. The Brevo pricing page shows a free tier of 300 emails per day (roughly 9,000/month) with up to 100,000 contacts stored, and paid plans starting at $9/month for 5,000 emails. For teams with large, relatively infrequent contact lists, this model is materially cheaper than Mailchimp’s contact-based tiers.
Brevo’s automation builder covers welcome sequences, transactional triggers, and multi-step flows. It is less specialized for SaaS product events than Customer.io or Loops, but solid for marketing and lifecycle campaigns where you control the send cadence. The platform also includes SMS and landing pages on paid plans.
Best for Teams Wanting CRM Plus Deep Automation: ActiveCampaign
ActiveCampaign combines email marketing, marketing automation, and a built-in CRM in one platform. Its automation builder supports branching workflows, conditional logic, lead scoring, and event-based triggers through its API. The API documentation at developers.activecampaign.com covers REST and webhook-based integrations.
Pricing starts at $15/month for 1,000 contacts on the entry-level Starter plan; higher tiers (Plus at $49/month, Pro at $79/month) unlock unlimited automation actions, predictive sending, and advanced reporting. ActiveCampaign is priced above MailerLite and Brevo, but below Customer.io for teams that need CRM functionality tied to automation.
Best for Developer-Friendly Templating and Automation: Cold Letter
Cold Letter is built for SaaS teams that want to handle marketing email, lifecycle automation, and developer API integration in one platform. The focus is on templating (reusable layouts with dynamic merge tags populated at send time), automation flows triggered by product or lifecycle events, and clean integration via API and SDK into an existing stack. It fits the SaaS-lifecycle or developer-integration buyer, not the small-business drag-and-drop-newsletter buyer.
Cold Letter does not publish pricing publicly; contact the team for details. If your team is evaluating transactional providers alongside marketing automation, our SendGrid alternatives guide covers the transactional-first toolset.
At-a-Glance Comparison
| Tool | Best Fit Buyer | Pricing Model | Behavioral/Event Triggers | Developer API | Free Tier |
|---|---|---|---|---|---|
| Mailchimp | Small business / ecommerce newsletters | Contact-based | Premium plan only | Yes | 250 contacts, 500 sends/mo |
| Customer.io | SaaS lifecycle / product-led teams | Profile-based | Native, core feature | Yes | No |
| Loops | SaaS startups, product + transactional in one | Contact-based (unlimited sends) | Yes | Yes | 1,000 contacts, 4,000 sends/mo |
| MailerLite | Creators, simple senders | Contact-based | Visual builder, basic | Limited | 500 contacts, 12,000 sends/mo |
| Kit | Independent creators / newsletters | Contact-based | Sequence automations | Limited | Up to 10,000 contacts |
| Brevo | High-frequency senders with large lists | Send-volume | Marketing flows, not event-native | Yes | 300 emails/day, 100K contacts |
| ActiveCampaign | Teams needing CRM + automation | Contact-based | Yes, via workflow builder | Yes | 14-day trial |
| Cold Letter | SaaS lifecycle / developer integration | Not publicly listed | Yes | Yes | Contact team |
Pricing figures as of 2026. Verify directly with each vendor before purchasing, as pricing changes frequently.
Who Should Stay on Mailchimp
If your list is under 5,000 contacts, you send newsletters rather than event-triggered sequences, and you rely on Mailchimp’s ecommerce integrations or its Shopify triggers, migrating may not be worth the disruption. Mailchimp’s Customer Journey Builder, template library, and brand recognition in the small-business market are genuine strengths. The migration effort (exporting audiences, rebuilding automations, setting up suppression lists, and warming your sender reputation on a new platform) typically takes three to four weeks for smaller operations.
For teams above that threshold with behavioral automation needs, the contact-counting billing model tends to surface as an operational frustration worth solving.
What Migrating Off Mailchimp Actually Involves
Contacts export as a CSV from Audience in the Mailchimp dashboard. Mailchimp separates subscribed, unsubscribed, non-subscribed, and cleaned contacts into separate files in the ZIP download. When importing to a new platform, only import actively subscribed contacts; reimporting unsubscribes violates anti-spam regulations and damages sender reputation. Upload your full unsubscribe list to your new platform as a suppression list before migrating any active contacts.
Automations don’t transfer programmatically. Each workflow needs to be rebuilt in the new tool. For teams with under 10 automations, budget a week of setup. For operations with 20 or more complex flows, plan for six to eight weeks from audit to go-live.
DNS authentication records (SPF, DKIM, DMARC) need to be updated for the new sending domain on the new platform before volume sends. Skipping this step is the most common cause of deliverability problems after a platform migration.
Frequently Asked Questions
What is the best free alternative to Mailchimp?
For newsletter senders, Kit offers the most generous free tier: up to 10,000 subscribers with unlimited sends and forms. For SaaS teams that also send transactional email, Loops includes transactional sending in its free tier (1,000 contacts, 4,000 sends/month). Brevo’s free plan stores up to 100,000 contacts but caps daily sends at 300 emails per day, making it suitable for large lists with infrequent campaigns.
Is Brevo cheaper than Mailchimp?
For senders with large contact lists who send infrequently, yes. Brevo charges by email volume rather than contact count, so a list of 50,000 contacts sending two campaigns per month costs significantly less than on Mailchimp’s contact-based tiers. For small lists with high send frequency, the comparison is less clear-cut. Verify current rates directly on Brevo’s pricing page and Mailchimp’s pricing page.
Why does Mailchimp get so expensive as lists grow?
Mailchimp’s contact-based billing model counts every contact in your account toward your plan limit, including unsubscribed and non-subscribed contacts that cannot receive marketing email. Unless you regularly archive these contacts, your bill grows even when your active audience does not. This is a documented behavior in Mailchimp’s pricing help documentation. Platforms that charge by email send volume (like Brevo) or by subscribed contacts only avoid this problem by design.
What is the best Mailchimp alternative for SaaS automation?
Customer.io is the most purpose-built option for behavioral, event-triggered SaaS lifecycle email. It lets you trigger messages from product events like activation, inactivity, or feature adoption, and it handles multi-channel workflows (email, SMS, push) in one builder. Loops is a simpler alternative for SaaS startups that want marketing, onboarding, and transactional email unified without the complexity of a full Customer.io implementation.
Can I migrate my automations off Mailchimp?
Contacts export cleanly as CSV files. Automations, however, cannot be exported or auto-imported into another platform. Each workflow needs to be rebuilt manually in the destination tool. A migration with fewer than 10 automations typically takes one to two weeks of setup; complex operations with 20 or more flows should budget four to eight weeks. Always import your Mailchimp unsubscribe list as a suppression list in the new platform before sending any campaigns.
Does MailerLite or Kit have better automation?
MailerLite has a more capable visual automation builder for multi-step workflows with conditional branching, and it is available on both paid and free plans. Kit’s automation is stronger for creator use cases: subscriber tagging, purchase-triggered sequences, and integrations with digital product platforms. Kit does not cover product event triggers from a SaaS application; if that is your requirement, neither platform matches Customer.io or Loops.
I’ve spent my career building software at scale with a soft spot for email: deliverability, lifecycle campaigns, and getting messages to actually land. I started Coldletter to fix what bugged me about transactional and marketing email tools. I’m based in Vancouver.