Responsive HTML Email Coder

    by Markus Isaksson

    2

    Generate production-ready, responsive HTML emails from brand tokens with Outlook VML and Gmail inlining.

    $5

    · or 25 credits

    30-day refund guarantee

    Secure checkout via Stripe

    0 installsNo reviews yet

    Works with the AI tools you already use

    CClaude CodeCCursorCCodex CLIGGitHub CopilotGGemini CLIVVS CodeWWindsurf+15 more

    About this skill

    The problem

    Hand-coding HTML emails is a nightmare of 1990s table layouts, Outlook-specific VML bugs, and inconsistent Gmail CSS support. Maintaining brand consistency while ensuring layouts don't break across dozens of devices and dark mode settings takes hours of manual testing.

    What it does

    • Generates four distinct template types: Transactional, Marketing, Newsletter, and Confirmation.
    • Injects Outlook-safe VML code for bulletproof buttons and background images.
    • Automatically inlines CSS styles to ensure compatibility with the Gmail web interface.
    • Resolves CSS design tokens into hardcoded HEX values to bypass lack of var() support in email clients.
    • Implements dark mode overrides using prefers-color-scheme and Gmail-specific attribute selectors.

    Frameworks & tools

    Produces standalone HTML compatible with SendGrid, Mailchimp, AWS SES, Postmark, Resend, and any platform supporting custom HTML uploads.

    Why this beats prompting it yourself

    Generic LLM prompts often produce code that breaks in Outlook or uses modern CSS variables that email clients ignore. This skill follows a rigorous component library that handles MSO conditional comments, accessibility roles, and Gmail clipping limits out of the box.

    Use cases

    • Convert brand CSS design tokens into a consistent transactional email system.
    • Refactor an existing welcome email to support dark mode and mobile responsiveness.
    • Bootstrap a newsletter template with article cards and social links that stack on mobile.
    • Create an automated order confirmation table that renders correctly in legacy desktop clients.

    Known limitations

    Outlook for Windows does not support border-radius on containers; these will render with square corners. Gmail may clip emails exceeding 102KB.

    html
    email
    responsive
    frontend
    transactional
    newsletter

    Details

    How to install

    Drop the file into your AI Agent. Works with Claude, Cursor, ChatGPT, and 20+ more.

    Reviews

    No reviews yet - be the first to share your experience.

    Only users who have downloaded or purchased this skill can leave a review.

    Security Scanned

    Passed automated security review

    Permissions

    Write Files
    Read Files

    Allowed Hosts

    www.w3.org
    placehold.co

    File Scopes

    emails/*
    emails/components/*
    tokens/*

    Creator

    Markus Isaksson

    Frequently Asked Questions

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