Markdown to Email HTML

Convert markdown into a complete, self-contained HTML email with inline CSS, table-based layout, and cross-client compatibility (Gmail, Outlook, Apple Mail).

Workflow

1. Determine input

• If the user provided a file path, read the .md file
• If the user provided inline markdown, use that directly
• If neither, ask: "Which markdown file should I convert, or paste the content?"

2. Parse frontmatter

Extract YAML frontmatter from the top of the markdown. All fields are optional — use defaults for anything missing.