Markdown to Email HTML Converter
Convert Markdown into inline-styled, table-based HTML built for email clients. Copy-paste ready for newsletters, transactional emails, and ESP HTML blocks. Free, runs in your browser.
Markdown to Email HTML — inline-styled, table-based conversion
Regular HTML that looks fine on a website often breaks in an inbox. Most email clients strip <style> blocks and external stylesheets entirely, and many — desktop Outlook especially — misrender modern CSS layout (flexbox, grid, even basic margin/padding shorthand in some cases). The two techniques that reliably survive across clients are inline style="..." attributes on every element and table-based layout for structural width/centering. This tool converts your Markdown straight to that format: paste Markdown on the left, copy ready-to-send HTML on the right.
How it works
- Your Markdown is parsed into a token tree (headings, paragraphs, lists, tables, etc.) using the same Markdown parser as our other conversion tools.
- Each token is rendered as a real, semantic HTML element (
<h1>–<h6>,<p>,<ul>/<ol>,<blockquote>,<table>) with a fullstyle="..."attribute written directly on the tag — no<style>block, no CSS classes. - The whole thing is wrapped in a single-column, 600px-wide
<table role="presentation">shell, centered on the page — the standard structural pattern used by virtually every hand-coded email template, because table layout is the one thing every email client (including old Outlook) reliably supports for positioning. - Everything runs in your browser. Nothing is uploaded anywhere.
Design choice: styled tags, not table-based headings
Email developers debate two approaches for text elements like headings: real semantic tags with inline styles, versus simulating every heading as a <table>/<td> for maximum control. This tool uses styled semantic tags (real <h1>–<h6> and <p> elements with inline CSS) rather than table-izing text content. All modern clients — Gmail, Apple Mail, Outlook.com/New Outlook, Yahoo Mail, and mobile mail apps — render inline-styled semantic tags correctly. Table-based layout is reserved for the outer structural shell and for any Markdown table in your content itself, which is where table layout actually matters for cross-client consistency.
What converts well
| Markdown | Email HTML output |
|---|---|
Headings #–###### | Inline-styled <h1>–<h6> with email-safe font sizes |
| Bold, italic, strikethrough, inline code | Inline-styled <strong>, <em>, <span>, <code> |
| Links | Inline-styled <a> with underline and brand-blue color |
| Bulleted and numbered lists (incl. nesting) | Inline-styled <ul>/<ol>/<li> |
| Blockquotes | Left-border, indented, muted-color paragraph block |
| Tables | Bordered, inline-styled <table>/<th>/<td> |
| Fenced code blocks | Monospace <pre><code> on a shaded background, wrapped rather than scrollable |
| Horizontal rules | Simple <hr> divider |
| Images | Real <img> tag with inline max-width:100% and no lazy-loading attribute (email clients don't support lazy loading) |
Known limitations
| Feature | Behavior / limitation |
|---|---|
| Images | Not embedded — the <img src> is copied through as-is. Email clients need images hosted at a public, absolute URL; relative paths and local files won't load, and most clients block embedded/base64 images by default. |
| Syntax highlighting | Not applied — code blocks render in a plain monospace font on a shaded background. Email clients don't reliably support the CSS classes syntax highlighters depend on. |
| Task list checkboxes | Rendered as ☑ / ☐ text characters, not interactive checkboxes — HTML form controls are unreliable across email clients. |
| Desktop Outlook (Windows) | Word-engine rendering means limited flexbox/grid support and no CSS background images. This tool avoids those features, but complex layouts may still need VML/conditional-comment workarounds beyond this tool's scope. |
| Raw HTML blocks in your Markdown | Passed through unchanged — inline styles are not automatically applied to hand-written HTML, so double-check it manually, especially for Outlook. |
Footnotes [^1] | Not expanded by the underlying parser — footnote markers are left as literal text. |
| Mermaid diagrams | Kept as a plain-text code block, not rendered as a diagram — no email client executes JavaScript. |
Use cases
- Newsletter writers — draft in Markdown, paste the generated HTML straight into Mailchimp's, ConvertKit's, or Substack's "custom HTML" block
- Transactional email templates — write receipt, welcome, or notification copy in Markdown and get inline-styled HTML your email service (SendGrid, Postmark, SES) can send as-is
- Documentation-to-email workflows — turn a release-notes or changelog Markdown file into an email update without hand-writing table layouts
- One-off announcement emails — quickly produce something better formatted than plain text without learning email-specific HTML conventions
Related tools
- Markdown to HTML — plain semantic HTML for websites, not tuned for email clients
- Markdown Live Editor — write and preview Markdown before exporting
- Markdown to Word (.docx) — convert Markdown to a real Word document instead
- HTML to Markdown — go the other direction: convert existing email HTML back to Markdown