API-firstSince 2013
Kit (ConvertKit)
6.4/10Creator-focused email marketing with visual automations, commerce, and a developer API.
Capability scores
Agent interface5.0
API & developer experience7.0
Automations7.0
Deliverability8.0
AI generation5.0
Positioning
Formerly ConvertKit, Kit serves creators with tag-based subscriber management, visual automations, and built-in commerce. Its API supports subscriber and automation management; AI is assistive.
Agent & API surface
- REST API (v4) for subscribers, tags, sequences, and broadcasts.
- Assistive AI for writing and ideation.
Automations
- Visual automation builder with tag-based triggers and sequences.
- Commerce flows for digital products.
Deliverability
- Reliable creator-focused sending.
- Tag and engagement-based targeting.
Strengths
- +Simple, creator-friendly tag model.
- +Built-in commerce and landing pages.
Trade-offs
- –Less suited to complex B2C ecommerce segmentation.
- –No first-party agent/MCP layer.
Best for
Creators and solo operators who want tag-based lists, simple automations, and selling digital products.
Consider if
You need ecommerce-grade segmentation or an agent control plane — Kit favors creator simplicity.
Pricing posture
Free tier for early creators; paid plans scale with subscribers. See kit.com/pricing.