Kit (formerly ConvertKit) lists 21 features. How many does your team use?

Email sending, deliverability, and the Kit App Store ecosystem can't be rebuilt cheaply; the rest of the feature set is buildable but a large effort.

Email marketing and sending

• Email marketing broadcasts
  Send newsletters, launches and promotions to a list with opens, clicks and sales reported per email.
  Needs an outside service: Amazon SES. Bulk campaign sending needs a deliverability-grade email provider; we can build the UI but not the sending reputation.
• Email designer
  Visual no-code email editor with templates, brand colors and fonts.
  Simplified version. Buildable as a simpler block editor; no Canva/Pinterest/Typeform embeds unless built separately.
• Email templates
  Free and paid reusable responsive email templates.
• A/B testing
  Test subject lines or full email content and pick winners.
• Edit links after sending
  Fix a broken link in an already-sent email.
  Simplified version. Only the web-hosted version can be updated; already-delivered inboxes cannot be changed.
• Countdown timers
  Timezone-aware live countdowns inside emails.
  Simplified version. Email clients block live timers; a static or web-hosted countdown is what's realistic.

Deliverability

• SPF/DKIM domain setup and one-click unsubscribe
  Verified sending domain with authentication and unsubscribe handling.
  Needs an outside service: Resend. DNS configuration and unsubscribe are buildable; reputation management needs a sending provider.

Landing pages and forms

• Landing pages
  Waitlist, lead magnet and sales pages with templates and custom domains.
• Forms
  Inline, pop-up and slide-in signup forms that tag subscribers.

Automation

• Visual automations
  Visual builder that moves subscribers through paths triggered by signups, purchases, clicks or dates.
  Needs an outside service: Resend. Workflow engine is buildable; delivering the emails at scale needs an email provider.
• Email sequences
  Series of emails for welcome, launch or course that skip past buyers.
  Needs an outside service: Resend. Scheduled sequence logic is buildable; sending needs an email provider.
• Kit MCP
  Connect AI tools like Claude or ChatGPT to tag subscribers, create sequences and draft broadcasts.
  Needs an outside service: OpenAI or Anthropic API. Requires running an MCP server and AI model access; approvals and drafting are buildable.

Audience segmentation and analytics

• Tags and segments
  Tags for details and segments for groups on one list.
• Analytics dashboards
  Engagement over time, cohort retention, acquisition sources and growth by location.
• Engagement scoring and engagement analytics
  Star ratings for subscribers and split of newly engaged, recurring, resurrected and dormant.
• Subscriber Signals (demographic and social-influence enrichment)
  Enriches subscribers with demographic and social-influence data.
  We can't build this. Requires licensed third-party data enrichment datasets we cannot supply.

Selling and monetization

• Commerce (digital products, courses, subscriptions)
  Sell ebooks, courses, coaching and subscriptions with automatic delivery.
  Needs an outside service: Stripe. Buildable with Stripe payments and file delivery.
• Paid newsletter and newsletter sponsorships
  Recurring newsletter subscriptions and sponsor placements.
  Needs an outside service: Stripe + Amazon SES. Subscriptions via Stripe are buildable; sponsor marketplace is a business-network component.

Integrations

• Kit App Store integrations
  Connect Shopify, Stripe, Thinkific, Canva, Circle, Linktree and others to sync purchases and course progress.
  Simplified version. We can build the integrations we need via their APIs; the third-party app catalog itself cannot be replicated.
• CSV import and export
  Move subscribers in and out of the list.

Support and services

• Growth Concierge, expert directory, free migrations
  Human strategists, expert hiring directory and list migration service.
  We can't build this. Staffed human services and a marketplace of experts are not software we can build.

What you’d bring

We write all the code. These features only work on outside services, and those accounts are yours to open and pay for directly.

What we can’t build

• Subscriber Signals (demographic and social-influence enrichment). Requires licensed third-party data enrichment datasets we cannot supply.
• Growth Concierge, expert directory, free migrations. Staffed human services and a marketplace of experts are not software we can build.

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