Kit (formerly ConvertKit) vs Mailchimp
Kit was built for creators with visual automations and a creator network. Mailchimp was built for small businesses with broad integrations. Both have pricing problems, but for different reasons.
Verdict
Kit is better for content creators who need visual automations and the Creator Network for growth. Mailchimp is better if you need 300+ integrations and e-commerce features. But honestly, MailerLite beats both on value for solo creators.