Kit (formerly ConvertKit)

Kit (formerly ConvertKit) is an email and membership platform designed for creators, writers, and course builders. It includes WordPress integration through signup forms, landing page builder, email automation sequences, and membership functionality for paid subscribers. Creators can set up free and paid tiers of email content, with Kit handling subscription management and payment processing.

It's well-suited for authors, content creators, and coaches who want to monetize their audience through memberships and digital products alongside free email content. Kit's strength is the membership and payment features built into the platform, allowing creators to manage both free and paid subscriber tiers without extra plugins. Compared to traditional email platforms, Kit is purpose-built for the creator economy with membership and monetization as core features rather than add-ons. The WordPress integration works well but is supplementary to the main Kit platform rather than plugin-first like some alternatives.