Kit

Kit (formerly ConvertKit): Email Marketing Built for Creators

Kit is the email marketing platform that launched as ConvertKit in 2013 and rebranded in 2024. It is built around the way creators actually work: tag-based subscriber management instead of duplicated lists, a visual automation builder, landing pages and forms, and built-in commerce for selling digital products without a separate checkout tool.

Its AI position is the clearest of the major newsletter platforms. Kit ships an official MCP server at kit.com/ai/mcp that connects Claude, ChatGPT, Gemini, Cursor and other clients directly to a Kit account, so an assistant can read subscriber data, draft campaigns and act on automations. Kit also generates and tests subject lines inside the email editor, offers a Developer Assistant for building custom apps by description rather than code, and hosts AI writing tools such as Lex and Wordsmith in its 60-plus app App Store.

Production credibility: Kit serves hundreds of thousands of creators and has paid out over $1 billion to creators through its commerce and sponsorship products. It is profitable, bootstrapped, and publishes its metrics openly.

Key Features

• Official Kit MCP server connecting Claude, ChatGPT, Gemini and Cursor to your account
• AI subject line generation and testing inside the email editor
• Tag-based subscriber model — one subscriber, many tags, no duplicate list billing
• Visual automation builder for sequences, branching and triggers
• Landing pages, forms and a Creator Network for cross-promotion
• Built-in commerce for digital products with no transaction fees on paid plans
• Developer Assistant for building custom apps from a plain-language description
• App Store with 60+ integrations including AI writing tools

Ideal Use Case

Kit fits creators and small teams whose newsletter is the business — course sellers, authors, coaches and independent operators who need segmentation, automated sequences and a way to sell without stitching four tools together. The tag model pays off once you are sending different things to different segments; a single undifferentiated broadcast list will not use half of what Kit offers.

How Kit differentiates

Kit was the first major newsletter platform to ship a first-party MCP server, which changes what "AI features" means: rather than one vendor's assistant embedded in the editor, you point whichever model you already use at your own account and give it real access. Combined with the Developer Assistant, the position is that AI should operate on your data through your chosen client, not through a feature the platform ships and charges for. Its commerce layer and tag-based billing also mean subscribers are not counted twice across lists, which materially changes the cost curve versus platforms that bill per list membership.

FAQ

Is Kit the same as ConvertKit? Yes. ConvertKit rebranded to Kit in 2024; the product, accounts and data carried over.

What is Kit MCP? An official Model Context Protocol server that lets AI assistants such as Claude, ChatGPT and Gemini connect to your Kit account to draft emails, query subscriber data and work with automations.

How much does Kit cost? There is a free Newsletter plan. Paid Creator plans start at $33 per month for 1,000 subscribers, with pricing scaling by list size.

Kit or beehiiv? Kit is stronger on segmentation, automation, digital product sales and AI access via MCP. beehiiv is stronger on ad network monetisation and growth analytics for media-style newsletters.

tl;dr

Kit is a creator-focused email marketing platform with tag-based subscriber management, visual automations, landing pages and built-in digital product commerce. It ships an official MCP server so Claude, ChatGPT or Gemini can work directly against your account, plus in-editor AI subject line generation and an AI-powered app store.