How they really differ
Systeme.io trades design flexibility for convenience: less pixel-level control, but opt-in pages, email follow-up and course hosting work together. Webflow trades convenience for control: you design the site, but email, funnels and courses mean adding other tools.
Systeme.io offers a free plan with limits on contacts and features. Webflow lets you build free on its own subdomain but needs a paid site plan for a custom domain. Check both pricing pages for current details.
Using both
Some creators keep a custom marketing site in Webflow and send visitors to Systeme.io for sign-up, email and course delivery.
The verdict
If your business is a course or a funnel, Systeme.io. If the brand site and its design are the product, Webflow.
Want the full write-up on each? Read our Systeme.io review and Webflow review.