Every email tool I'd used had the same architecture: blank canvas, template library, send and hope. The feedback loop was a week of open rates telling you nothing specific — was it the subject line, the layout, the CTA placement on mobile?
I built kopi to close that loop before the send.
Here's what the brief-to-email flow actually looks like. You write something like:
Product: running shoes, spring collection
Goal: drive purchases
Tone: motivational but not aggressive
Offer: free shipping over $75
Kopi returns a complete HTML email in under 5 minutes. Not a layout with placeholder text — a finished email with hierarchy, button contrast, and mobile-readable type sizes. More importantly, it runs an automated design critique scoring 12+ criteria on a 0–100 scale: layout hierarchy, CTA contrast, mobile readability, whitespace balance. You see the score before you send.
The scoring isn't cosmetic. A CTA that fails contrast minimums gets flagged with the specific value, not just a yellow warning icon. Layout hierarchy scoring penalizes emails where the H1, H2, and body text land within 2px of each other on mobile — a pattern that kills scan-ability but looks fine on desktop.
The public gallery at trykopi.ai/emails has 400+ emails that scored 80+ out of 100, which is useful for calibrating what a high-scoring email actually looks like in practice — not just what the rubric says.
Klaviyo export is direct. It also runs as an MCP server for Claude Code and Cursor if you want to generate emails inside your existing workflow rather than switching tabs.
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