Buyer's Guide

Best Email Marketing Platform for Online Course Creators in 2025

June 18, 2026 · 13 min read

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If you're selling online courses, your email platform isn't just sending newsletters—it's your sales engine, your onboarding system, and often the difference between a one-time buyer and a repeat customer. The wrong choice costs you either money (overpaying for features you don't use) or revenue (missing automations that turn subscribers into students).

This guide compares the platforms course creators actually use, with honest pricing breakdowns and the critical decision most articles skip: whether you need a standalone email tool or an all-in-one platform that bundles course hosting, checkout, and email in one place. By the end, you'll know exactly which tool fits your business model and list size.

I'll be direct about downsides, including when free plans are genuinely enough and when "industry favorites" aren't worth the premium for course creators specifically.

Quick Comparison Table

Kit (Formerly ConvertKit): The Creator Standard

What it's genuinely good at: Kit was built specifically for creators, and it shows in the details that matter for course sellers. The tag-based subscriber management lets you track exactly which courses each person owns, so you never accidentally pitch someone a course they already bought. Purchase-triggered automations work reliably—when someone buys, they immediately exit your sales sequence and enter your onboarding emails without manual intervention.

The visual automation builder is intuitive enough that non-technical creators can set up sophisticated sequences: tag someone as "interested in productivity course," send them a three-email nurture sequence, and if they don't buy within a week, move them to a different sequence. This level of behavioral automation is what converts browsers into buyers during launches.

Who it fits: Course creators who already have (or plan to use) a separate course platform like Teachable, Thinkific, or Kajabi. If you're comfortable with that setup and want your email marketing to be powerful but not overwhelming, Kit hits the sweet spot. The free plan supports up to 10,000 subscribers with one automation, which is genuinely usable for new creators—not a bait-and-switch trial.

Real downsides: The email editor is surprisingly limited for a premium tool. You can't create multi-column layouts or do sophisticated image positioning. If you want visually branded newsletters with complex designs, you'll find Kit frustrating. The plain-text-focused aesthetic works for some creators, but if your brand relies on visual polish, look elsewhere.

Pricing escalates quickly. At 10,000+ subscribers, you're paying $119/month on the Creator plan. MailerLite charges roughly half that for the same list size. You're paying for the creator-focused features and support, but if your email strategy is straightforward, that premium may not be worth it.

The transaction fee structure matters: on the free plan, Kit takes 3.5% + $0.30 per product sale. A $500 course sale costs you $17.80. After about two sales per month, you're better off paying $29/month for the Creator plan (which has zero transaction fees). This makes the free plan genuinely useful for pre-revenue creators but not a long-term solution once you're selling consistently.

Pricing: Free up to 10,000 subscribers (one automation, 3.5% transaction fees). Creator plan starts at $29/month for 1,000 subscribers (unlimited automations, no transaction fees). Creator Pro at $59/month adds subscriber scoring and advanced reporting.

systeme.io: All-in-One Without the Premium Price

What it's genuinely good at: Systeme.io bundles email marketing, course hosting, sales funnels, and checkout into one platform. For course creators who don't want to manage integrations between Teachable and Kit and Stripe, this is the simplest path. Everything talks to each other natively—no Zapier required.

The free plan is surprisingly generous: up to 2,000 contacts, unlimited emails, and you can host and sell courses. This isn't a trial; it's a genuinely usable free tier for new creators testing their first course. Paid plans start at $27/month, which is less than most standalone email tools charge, and you're getting the entire course infrastructure included.

Who it fits: Creators launching their first course or those tired of managing multiple subscriptions and integrations. If you value simplicity over best-in-class features for each component, Systeme.io makes sense. It's particularly smart for solopreneurs who don't have a VA to manage technical setup.

Real downsides: You're locked into their ecosystem. If you later want to switch to a more powerful email platform or a different course host, migration is painful. The email automation isn't as sophisticated as Kit's—you can build sequences, but the conditional logic and segmentation options are more basic.

The course player and member area are functional but not as polished as dedicated platforms like Teachable or Kajabi. If student experience and course presentation are critical to your brand, you might outgrow Systeme.io's capabilities. Think of it as the reliable Honda Civic of course platforms—it gets you there, but it won't impress anyone.

Pricing: Free plan up to 2,000 contacts with course hosting included. Startup plan at $27/month removes branding and adds more automation. Higher tiers add affiliate management and webinar hosting.

MailerLite: Best for Small Lists on a Budget

What it's genuinely good at: MailerLite offers strong email automation at a fraction of Kit's price. The drag-and-drop editor is more flexible than Kit's, supporting multi-column layouts and better image handling. For creators who want visually branded emails without paying premium prices, MailerLite delivers.

The automation builder is visual and approachable. You can set up purchase-triggered sequences, segment by tags, and create conditional paths based on subscriber behavior. It's not as deep as ActiveCampaign, but it covers what most course creators actually need.

Who it fits: Course creators with lists under 5,000 who want solid automation without premium pricing. If you're using a separate course platform (Teachable, Thinkific) and need a capable email tool that won't break the bank, MailerLite is the value pick.

Real downsides: The free tier only covers 1,000 subscribers, which is limiting if you're growing. Once you cross that threshold, you're paying, though still less than Kit. Integration with course platforms requires either native connections (which exist for major platforms) or Zapier for others—adding complexity and potential points of failure.

Customer support is slower than Kit's. When you hit a technical issue during a launch, waiting 24+ hours for a response is frustrating. Kit's support is notably faster, which matters when you're troubleshooting automations that directly impact revenue.

Pricing: Free up to 1,000 subscribers with basic automation. Paid plans start around $10/month depending on list size. Verify current 2025 pricing as it fluctuates with subscriber tiers.

ActiveCampaign: When Segmentation Gets Complex

What it's genuinely good at: ActiveCampaign's segmentation and conditional logic are the most sophisticated in this comparison. If you're selling multiple courses at different price points and need to track complex customer journeys—who attended which webinar, clicked which link, bought which product—ActiveCampaign handles it elegantly.

The CRM integration is genuinely useful for course creators who also do coaching or consulting. You can see a complete history of every subscriber's interactions, purchases, and engagement in one view. This level of detail helps you personalize follow-up and identify your most engaged potential customers.

Who it fits: Established course creators with multiple products and complex funnels. If you're running sophisticated launch sequences with multiple entry points, segmenting by engagement level, and need deep reporting on what's working, ActiveCampaign justifies its learning curve.

Real downsides: It's overkill for most new course creators. The interface is powerful but overwhelming if you just need basic purchase-triggered sequences. You'll spend time learning features you may never use.

Pricing is contact-based, which penalizes course creators who build large lists but email infrequently (common during launch-based business models). A 10,000-subscriber list costs significantly more than on send-based platforms like Brevo, even if you only email during quarterly launches.

Pricing: Starts around $29/month for 1,000 contacts, but scales quickly. Expect $100+/month for 5,000+ contacts. No free plan, though trials are available.

Brevo (Formerly Sendinblue): Pay-Per-Send Alternative

What it's genuinely good at: Brevo uses send-based pricing instead of contact-based, which is a game-changer for course creators with large lists who email infrequently. If you have 10,000 subscribers but only send during quarterly launches, you're not paying for those contacts every month—you're paying for the emails you actually send.

The free plan includes 300 emails per day (9,000/month), which is genuinely usable for small creators. Paid plans start around $25/month for 20,000 emails, and you can contact unlimited subscribers. For launch-based creators, this math works better than contact-based pricing.

Who it fits: Course creators with larger lists (5,000+) who email sporadically rather than weekly. If your strategy is quarterly launches with intense email sequences followed by quiet periods, Brevo's pricing model saves significant money compared to Kit or ActiveCampaign.

Real downsides: The automation builder is less intuitive than Kit's or MailerLite's. Setting up conditional sequences requires more technical thinking. The interface feels more "small business marketing platform" than "creator-focused tool"—you can do what you need, but it's not as smooth.

Email deliverability has historically been a concern with Brevo, particularly for users on the free plan. If you're sending to a large list, test deliverability carefully before committing to a major launch.

Pricing: Free plan with 300 emails/day. Paid plans start around $25/month for 20,000 emails with unlimited contacts. Pricing scales with email volume, not contact count.

Kartra and ClickFunnels: Premium All-in-Ones

What they're genuinely good at: Both platforms bundle everything—email, course hosting, sales funnels, checkout, membership sites, and webinar hosting. For creators who want a complete business infrastructure without stitching together multiple tools, these are the comprehensive solutions.

Kartra (~$59/month starting) is more course-focused, with robust membership site features and built-in affiliate management. ClickFunnels (~$97/month starting) is funnel-focused, optimized for high-converting sales pages and upsell sequences. Both eliminate integration headaches because everything is native.

Who they fit: Established course creators generating consistent revenue who want to consolidate tools and are willing to pay premium prices for convenience. If you're making $5,000+/month from courses and tired of managing five separate subscriptions, the all-in-one approach makes sense.

Real downsides: You're paying significantly more than standalone tools. ClickFunnels at $97/month costs more than Kit + Teachable combined. You're betting on the value of integration and convenience outweighing the premium.

Platform lock-in is real. Moving your courses, email list, and funnels off these platforms later is a massive project. You're committing to their ecosystem, which is fine if it works but painful if you outgrow their features or pricing.

The email components, while functional, aren't as creator-focused as Kit. You can build automations, but the interface and features are more generic "marketing platform" than "built for creators."

Pricing: Kartra starts around $59/month. ClickFunnels starts around $97/month. Both have higher tiers with more features. These prices are approximate for 2025; verify current pricing as both platforms adjust frequently.

Mailchimp and AWeber: When NOT to Choose Them

Be honest: Mailchimp and AWeber are household names, but they're not optimized for course creators. Mailchimp's contact-based pricing is expensive at scale, and its automation for purchase-triggered sequences requires more manual management than Kit or ActiveCampaign. The interface is built for e-commerce and general marketing, not course sales specifically.

AWeber is reliable but dated. The automation features lag behind newer platforms, and the pricing isn't competitive. Unless you're already deeply embedded in one of these platforms, there's no compelling reason for a course creator to choose them over the options above.

Who they fit: Essentially no one reading this article. If you're already using one and it's working fine, no need to switch. But if you're choosing a new platform for course marketing, skip these.

The Verdict: Who Should Pick What

Choose Kit if: You want creator-focused email with powerful automation, you're using (or plan to use) a separate course platform, and you value reliable purchase-triggered sequences. Best for creators with 1,000–10,000 subscribers who email regularly and need sophisticated segmentation. The free plan works for pre-revenue creators, but plan to upgrade once you're making consistent sales to avoid transaction fees.

Choose systeme.io if: You want everything in one place at the lowest price, you're launching your first course, or you're tired of managing integrations. Best for solopreneurs who value simplicity over best-in-class features for each component. The free plan is genuinely usable, making it the lowest-risk option for testing a course idea.

Choose MailerLite if: You have a smaller list (under 5,000), you want solid automation at budget pricing, and you care about email design flexibility. Best for creators who need more visual control than Kit offers but don't want to pay Kit's premium.

Choose Brevo if: You have a larger list (5,000+) but email infrequently—quarterly launches rather than weekly newsletters. The send-based pricing model saves significant money compared to contact-based platforms. Best for launch-based business models.

Choose ActiveCampaign if: You're running complex, multi-product funnels with sophisticated segmentation needs, and you value deep CRM integration. Best for established creators with multiple courses who need enterprise-level automation without enterprise pricing.

Choose Kartra or ClickFunnels if: You're generating $5,000+/month from courses, you want to consolidate multiple tools into one platform, and you're willing to pay premium prices for that convenience. Best for creators who value their time more than monthly subscription savings.

When NOT to buy—when free is genuinely enough: If you're pre-launch or have under 1,000 subscribers, start with Kit's free plan or Systeme.io's free tier. Both are genuinely usable, not crippled trials. Don't pay for email marketing until you're actually selling courses and need the automation to handle purchase-triggered sequences at scale.

If you're only sending occasional newsletters and not running automated sequences, even Moosend or a basic plan from any of these platforms is overkill. Use Substack or Beehiiv (newsletter-focused platforms) until you're ready to sell.

Final Recommendation

For most online course creators reading this, *Kit* is the right choice once you're making consistent sales. The creator-focused features, reliable purchase automation, and strong support justify the premium over cheaper alternatives. Start with the free plan if you're pre-revenue, then upgrade to the $29/month Creator plan once you're selling to avoid transaction fees.

If you're just starting and want the simplest possible path, systeme.io bundles everything you need at the lowest total cost. You'll avoid integration headaches and can focus on creating and selling your course instead of managing technical infrastructure.

And if you have a larger list but email infrequently, Brevo's send-based pricing will save you hundreds per year compared to contact-based platforms. Run the numbers at your projected 12-month list size, not your current size—email platform costs scale faster than most creators anticipate.

The wrong choice here costs you either money or missed revenue. Pick based on your actual business model—how often you email, how many products you sell, and whether you value integration simplicity or best-in-class features for each component. The "best" platform is the one that fits how you actually run your course business, not the one with the most features on paper.