[Feature] @json-render/react-email — Email renderer using React Email

[lucianfialho]

Summary

json-render already has renderers for web (React), mobile (React
Native), PDF (React PDF), and video (Remotion). I'd like to propose
adding an email renderer using
@react-email/components.

Motivation

• Emails are a natural fit — they're static like PDFs, and React Email
  is already React-based
• Real use case: AI generates personalized emails from natural
  language prompts
• Follows the exact same pattern as @json-render/react-pdf
  (tree-based spec, server-side render output)
• Completes the ecosystem: web, mobile, PDF, video, and now email

Proposed Design

Package: @json-render/react-email

Components (mapped from @react-email/components):

• Structure: Html, Head, Body, Container, Section, Row, Column
• Content: Heading, Text, Link, Button, Image, Markdown
• Utility: Hr, Preview, Font

Server export: renderToHtml(spec, options) — using render()
from @react-email/render

Spec format: Flat element tree (same as react-pdf and
react-native)

No state/interactivity — emails are static output, just like PDFs

I'm happy to implement this

I've studied the existing renderer packages and understand the
patterns (schema, catalog, catalog-types, renderer, standard
components, server exports). Would love to contribute this if there's
interest.

[ctate]

Email is a perfect use case

[lucianfialho]

Done! @ctate #159