# Authoring HTML Email
> Build client-facing HTML email that actually renders — correct multipart MIME (HTML + plain-text fallback ALWAYS), inline styles, and verify by rendering the received message.
- Skill: `selamy-labs/authoring-html-email` (Agent Skill)
- Install (CLI): `npx skillmds@latest add selamy-labs/authoring-html-email`
- Raw SKILL.md: https://api.skillmd.com/api/skills/selamy-labs/authoring-html-email/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Web & Frontend
- Author: selamy-labs (https://skillmd.com/u/selamy-labs)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/selamy-labs/authoring-html-email
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# authoring-html-email
Email is not the web. Clients (Gmail, Outlook, Apple Mail) strip ``/`