Kit.com (formerly ConvertKit) is a leading email marketing and newsletter platform for creators in 2026, offering automated workflows, subscriber growth tools, commerce for digital products/subscriptions, and monetization via ads/sponsorships. It features intuitive visual automations, segmentation, landing pages, and integrations—including light AI via Lex for content prompts. With a generous free plan and scalable paid options, it's ideal for bloggers, podcasters, YouTubers, and solo entrepreneurs building audience relationships and revenue.