There's an email in kopi's public gallery — a product launch for a skincare brand — that scored 91/100. The automated critique flagged one thing: the secondary CTA button had 3.8:1 contrast against its background, below the 4.5:1 threshold for mobile readability. Everything else passed: single-column hierarchy, 16px minimum body text, primary CTA above the fold with 7:1 contrast, whitespace ratios between sections.
That kind of pre-send feedback is what I built kopi around. The blank-canvas problem in email tools isn't lack of templates — it's that you have no signal on whether what you made actually works until it's in 40,000 inboxes.
kopi generates a complete HTML email from a text prompt in under 5 minutes, then runs every output through a design critique scoring 12+ criteria on a 0-100 scale: layout hierarchy, mobile readability, CTA contrast, font sizing, section spacing. The score isn't a suggestion — it's specific, with line-item failures you can act on before export.
400+ emails scoring 80+ are public at trykopi.ai/emails. You can see the score breakdown for each one — useful if you're trying to understand what high-performing email structure actually looks like across industries, not just your own campaigns.
It integrates with Klaviyo for direct export, runs as an MCP server in Claude Code and Cursor, and can learn a brand's fonts, colors, and layout preferences to generate on-spec without manual restyling every time.
Repo and docs: github.com/robertnowell/kopi
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