ConvertKit is an email-first operating system designed for creators who want to build a valuable business. It offers a range of tools to help creators foster deeper connections with their audience and build a purposeful, profitable, and sustainable business. Features include email automation, audience segmentation, and product selling capabilities. ConvertKit supports creators such as authors, bloggers, musicians, and more by offering integrations with platforms like Squarespace, Patreon, and Shopify. It provides free migration services for moving email marketing to its platform and targets a wide array of use cases from newsletters to ecommerce businesses.