Three tools, three different jobs, and picking based on brand recognition instead of the actual job is how teams end up paying for automation depth they never use or fighting a creator-focused platform to do B2B lead scoring it was never built for.
ActiveCampaign is a marketing automation platform with a CRM attached. Mailchimp is the recognizable default that most people default to without evaluating alternatives. ConvertKit (rebranded to Kit in 2024) is built specifically for creators monetizing an audience. All three send email. Only one of them does the other two jobs well.
ActiveCampaign: Automation Depth as the Whole Point
ActiveCampaign starts at $15/month for the Starter plan (1,000 contacts), scaling through Plus at $49/month and Professional at $79/month with annual billing. The Plus tier is where the lightweight CRM and advanced automation actually live, so Starter alone undersells what the platform can do.
The automation builder is the real differentiator. Multi-branch sequences, conditional logic, site tracking triggers, event-based actions, and CRM pipeline updates all happen on one visual canvas. Lead scoring updates automatically based on email behavior and site visits, not manual tagging. The CRM handles deals, tasks, and pipeline stages without the overhead of a full Salesforce implementation, which matters for a services business or B2B SaaS team that needs a lightweight sales pipeline attached to its marketing automation rather than two disconnected systems.
Contact-based pricing scales fast: 10,000 contacts on Starter runs $70/month, and that's before upgrading to Plus for the CRM and deeper automation. The honest complaints are real. The interface feels dated next to newer competitors, and new users report a real learning curve before the automation builder clicks. Customer support and onboarding are consistently praised on Reddit as the best in the SMB email category, which offsets some of that learning curve.
ActiveCampaign is the standard recommendation for B2B SaaS and service businesses that want automation triggered by actual user behavior (a pricing page visit, a specific email click, a form submission) rather than just tracking opens.
Mailchimp: Recognizable, Not Necessarily Right
Mailchimp has been acquired by Intuit since 2021 and remains the platform most people think of first when they think "email marketing," which is exactly the problem. The free tier covers 500 contacts and 1,000 emails/month. Essentials starts at $13/month, Standard at $25/month, Premium at $350/month, all priced per contact, which compounds quickly on larger lists. At 10,000 contacts, Standard runs $100+/month, more than ActiveCampaign's equivalent tier with meaningfully less automation depth.
The email builder is drag-and-drop and genuinely solid for basic campaigns. Automation on Essentials is limited compared to ActiveCampaign or Klaviyo, and Reddit's email marketing communities are consistent on this point: ConvertKit handles creator audiences better, Klaviyo handles e-commerce better, and ActiveCampaign delivers deeper automation at a lower price for equivalent functionality.
What Mailchimp actually offers that justifies its default status: brand recognition, a low barrier to entry, and templates that look professional without much design effort. For a team sending their first newsletter with no automation requirements, that's a legitimate reason to start there. For a team with a growing list or serious automation needs, the math stops favoring Mailchimp fast, and alternatives are almost always cheaper per equivalent feature.
ConvertKit: Built for a Different Job Entirely
ConvertKit is free up to 10,000 subscribers with basic broadcasts, one of the most generous free tiers in email marketing. Creator tier runs $25/month, Creator Pro runs $50/month for advanced features. The platform's entire design center is independent creators: bloggers, podcasters, YouTubers, and course sellers monetizing an audience directly.
The differentiator from both Mailchimp and ActiveCampaign is philosophy, not just feature count. Subscriber tagging and segmentation is built around content delivery and audience relationship, not e-commerce transactions or B2B lead scoring. Paid newsletter and digital product sales are native features, not bolted-on integrations. For a creator whose business model is the audience itself, this native commerce layer removes a real integration headache that Mailchimp or ActiveCampaign users have to solve with third-party tools.
The tradeoffs: the email editor is less polished than Mailchimp's drag-and-drop builder, the visual automation tool can be confusing to configure, and ConvertKit is not built to do what ActiveCampaign does. There is no CRM, no pipeline management, and automation triggers are oriented around content engagement rather than sales behavior. Comparing it to ActiveCampaign on automation depth is comparing tools built for different jobs.
The Actual Decision
The category that matters most is not "which tool is best" but "what is your list actually for." A B2B company nurturing leads through a sales funnel needs behavioral triggers and CRM integration; that's ActiveCampaign's whole design. A creator selling a paid newsletter or a course needs subscriber tagging and native monetization; that's ConvertKit's whole design. A team sending occasional newsletters with no real automation requirement doesn't need either, and Mailchimp's brand recognition and low setup friction are a legitimate reason to start there, provided the list stays small and automation stays basic.
Cost at a Real List Size
At 10,000 contacts with meaningful automation: ActiveCampaign Plus runs roughly $70-100/month depending on exact contact count and feature tier. Mailchimp Standard runs $100+/month for less automation depth. ConvertKit at 10,000 subscribers is still within the free tier for basic use, or $25/month on Creator for tagging and sequences, though it has no equivalent CRM or B2B automation to compare against ActiveCampaign directly.
The pattern holds across list sizes: Mailchimp's per-contact pricing rarely wins on cost once automation needs go past basic, and it never wins on automation depth against ActiveCampaign. The real question is whether you need ActiveCampaign's CRM and behavioral automation (B2B, service business) or ConvertKit's creator-native monetization (audience business), because those are different products solving different problems, not tiers of the same product.
Switching Costs Between Them
Migrating a list between any of these three is more work than exporting a CSV and importing it elsewhere. Automation logic doesn't transfer: ActiveCampaign's multi-branch sequences and CRM pipeline stages have to be rebuilt from scratch in Mailchimp or ConvertKit, since neither has an equivalent structure to migrate into. Moving from Mailchimp to ActiveCampaign means rebuilding automations with meaningfully more capability, which is upgrade work rather than pure migration pain. Moving from ActiveCampaign down to ConvertKit or Mailchimp means losing CRM and behavioral triggers entirely, which only makes sense if the automation depth was never being used.
Subscriber tags and segments generally do transfer via CSV, though the underlying logic that populated those tags automatically does not. Budget real setup time (days, not hours) for rebuilding automation on the new platform regardless of direction, and test the rebuilt sequences against a small segment before cutting the whole list over.
The Recommendation
For B2B SaaS, agencies, or service businesses that need automation triggered by actual behavior and a lightweight CRM without adopting Salesforce: ActiveCampaign. Accept the interface learning curve for the automation depth; it's the standard recommendation in this category for a real reason.
For creators monetizing an audience through paid newsletters, courses, or digital products: ConvertKit, specifically for the native commerce integration Mailchimp and ActiveCampaign don't offer.
For a first newsletter with no automation requirements and a small list: Mailchimp is a reasonable, low-friction starting point. The moment automation or list size becomes a real consideration, run the cost comparison before renewing, because the numbers stop favoring it quickly.
For the creator-specific version of this comparison including Beehiiv, the Mailchimp vs ConvertKit vs Beehiiv breakdown covers newsletter monetization platforms in more depth. For teams evaluating ConvertKit specifically against Mailchimp without the ActiveCampaign automation angle, the ConvertKit vs Mailchimp comparison covers that head-to-head directly.