# Mail > Transactional email in an AdonisJS app — `@adonisjs/mail` classes extending `BaseMail`, MJML templates via a shared `@email.layout` component, and `mailContext()` for appName/appUrl. Never author raw HTML+CSS blocks. Use when adding a new email, editing an existing template, testing mail with `mail.fake()`, or wiring the SMTP env. Trigger on: "add email", "send mail", "MJML template", "reset password mail", "welcome email". - Skill: `filipebraida/mail` (Agent Skill) - Install (CLI): `npx skillmds@latest add filipebraida/mail` - Raw SKILL.md: https://api.skillmd.com/api/skills/filipebraida/mail/raw - Safety review: pending - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Web & Frontend - License: MIT - Author: filipebraida (https://skillmd.com/u/filipebraida) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/filipebraida/mail --- # Mail Emails are classes that extend `@adonisjs/mail`'s `BaseMail`. The `prepare()` method sets recipients, subject, and calls `this.message.htmlView('::emails/