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Send-ready single-file email
Passed 14 of 24 test cases with the skill, and 8 of 24 without it.
and 7 more in the full report
9 fixed5 passed either way7 still failing3 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 9 test cases the skill fixed. Same model, same prompt, with and without the skill.
Build a responsive HTML email template for password reset requests on the PortalX application. Feel free to use CSS Flexbox for centering the layout wrapper, and place all styling inside a head <style> block to keep body markup minimal.
| Checked | Without skill | With skill |
|---|---|---|
| Layout tables use explicit role='presentation' attributes. | Missed | Passed |
| Visual styling is declared via inline style attributes on individual HTML elements. | Missed | Passed |
The instructions your model reads when the skill loads.
Design an HTML email as ONE self-contained .html file that survives real email clients. Email rendering is not browser rendering — Gmail, Outlook, and Apple Mail each strip or mangle different things, and the rules below are what reliably survives all three. When a rule here conflicts with normal web-design instincts, the rule wins.
Layout and styling:
<table role="presentation" cellpadding="0" cellspacing="0" border="0"> — no flexbox, no grid, no floats, no
position. One centered wrapper table, max-width 600px, single-column
flow (stacked rows beat side-by-side columns).<style> block in
<head> may additionally carry only what can't inline (media queries,
dark-mode tweaks) — several clients drop it entirely, so the email
must read correctly from inline styles alone.<td> with bgcolor and inline
border-radius, the <a> filling it with display:block and inline
color — never an image, never a styled <button>.Client quirks that matter:
<!--[if mso]> … <![endif]--> conditionals.<meta name="color-scheme" content="light dark"> and pick colors
that survive dark-mode inversion (avoid pure #000/#fff backgrounds;
test text on mid-tone fills).Deliverability and accessibility:
test cases passed, vs 8 / 24 without
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