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Exibindo SKILL.md
| name | email-template-builder |
| description | Setting up transactional email for a new product |
| executor | LLM_BEHAVIOR |
| skill_id | engineering.cs-engineering-team.email-template-builder |
| status | ADOPTED |
| security | {"level":"standard","pii":true,"approval_required":false} |
| anchors | ["engineering","design"] |
| tier | 2 |
| input_schema | [{"name":"code_or_task","type":"string","description":"Code snippet, script, or task description to process","required":true}] |
| output_schema | [{"name":"plan","type":"string","description":"Strategic plan or design document"},{"name":"next_steps","type":"array","description":"List of recommended next steps"}] |
Tier: POWERFUL
Category: Engineering Team
Domain: Transactional Email / Communications Infrastructure
Build complete transactional email systems: React Email templates, provider integration, preview server, i18n support, dark mode, spam optimization, and analytics tracking. Output production-ready code for Resend, Postmark, SendGrid, or AWS SES.
emails/
├── components/
│ ├── layout/
│ │ ├── email-layout.tsx # Base layout with brand header/footer
│ │ └── email-button.tsx # CTA button component
│ ├── partials/
│ │ ├── header.tsx
│ │ └── footer.tsx
├── templates/
│ ├── welcome.tsx
│ ├── verify-email.tsx
│ ├── password-reset.tsx
│ ├── invoice.tsx
│ ├── notification.tsx
│ └── weekly-digest.tsx
├── lib/
│ ├── send.ts # Unified send function
│ ├── providers/
│ │ ├── resend.ts
│ │ ├── postmark.ts
│ │ └── ses.ts
│ └── tracking.ts # UTM + analytics
├── i18n/
│ ├── en.ts
│ └── de.ts
└── preview/ # Dev preview server
└── server.ts
// emails/components/layout/email-layout.tsx
import {
Body, Container, Head, Html, Img, Preview, Section, Text, Hr,
}
{
:
: .
}
() {
(
)
}
styles = {
: { : , : },
: { : , : , : , : , : },
: { : , : },
: { : },
: { : , : },
: { : },
: { : , : , : , : },
: { : , : },
}
// emails/templates/welcome.tsx
import { Button, Heading, Text } from "@react-email/components"
import { EmailLayout } from "../components/layout/email-layout"
interface WelcomeEmailProps {
name: "string"
confirmUrl: string
trialDays?: number
}
export function WelcomeEmail({ name, confirmUrl, trialDays = 14 }: WelcomeEmailProps) {
return (
<EmailLayout preview={`Welcome to MyApp, ${name}! Confirm your email to get started.`}>
<Heading style={styles.h1}>Welcome to MyApp, {name}!</Heading>
<Text style={styles.text}>
We're excited to have you on board. You've got {trialDays} days to explore everything MyApp has to offer — no credit card required.
</Text>
<Text style={styles.text}>
First, confirm your email address to activate your account:
</Text>
<Button href={confirmUrl} style={styles.button}>
Confirm Email Address
</Button>
<Text style={styles.hint}>
Button not working? Copy and paste this link into your browser:
<br />
<a href={confirmUrl} style={styles.link}>{confirmUrl}</a>
</Text>
<Text style={styles.text}>
Once confirmed, you can:
</Text>
<ul style={styles.list}>
<li>Connect your first project in 2 minutes</li>
<li>Invite your team (free for up to 3 members)</li>
<li>Set up Slack notifications</li>
</ul>
</EmailLayout>
)
}
export default WelcomeEmail
const styles = {
h1: { fontSize: "28px", fontWeight: "700", color: "#111827", margin: "0 0 16px" },
text: { fontSize: "16px", lineHeight: "1.6", color: "#374151", margin: "0 0 16px" },
button: { backgroundColor: "#4f46e5", color: "#ffffff", borderRadius: "6px", fontSize: "16px", fontWeight: "600", padding: "12px 24px", textDecoration: "none", display: "inline-block", margin: "8px 0 24px" },
hint: { fontSize: "13px", color: "#6b7280" },
link: { color: "#4f46e5" },
list: { fontSize: "16px", lineHeight: "1.8", color: "#374151", paddingLeft: "20px" },
}
// emails/templates/invoice.tsx
import { Row, Column, Section, Heading, Text, Hr, Button } from "@react-email/components"
import { EmailLayout } from "../components/layout/email-layout"
interface InvoiceItem { description: string; amount: number }
interface InvoiceEmailProps {
name: "string"
invoiceNumber: string
invoiceDate: string
dueDate: string
items: InvoiceItem[]
total: number
currency: string
downloadUrl: string
}
export function InvoiceEmail({ name, invoiceNumber, invoiceDate, dueDate, items, total, currency = "USD", downloadUrl }: InvoiceEmailProps) {
const formatter = new Intl.NumberFormat("en-US", { style: "currency", currency })
return (
<EmailLayout preview={`Invoice ${invoiceNumber} - ${formatter.format(total / 100)}`}>
<Heading style={styles.h1}>Invoice #{invoiceNumber}</Heading>
<Text style={styles.text}>Hi {name},</Text>
<Text style={styles.text}>Here's your invoice from MyApp. Thank you for your continued support.</Text>
{/* Invoice Meta */}
<Section style={styles.metaBox}>
<Row>
<Column><Text style={styles.metaLabel}>Invoice Date</Text><Text style={styles.metaValue}>{invoiceDate}</Text></Column>
<Column><Text style={styles.metaLabel}>Due Date</Text><Text style=>{dueDate}
Amount Due{formatter.format(total / 100)}
{/* Line Items */}
Description
Amount
{items.map((item, i) => (
{item.description}
{formatter.format(item.amount / 100)}
))}
Total
{formatter.format(total / 100)}
Download PDF Invoice
)
}
export default InvoiceEmail
const styles = {
h1: { fontSize: "24px", fontWeight: "700", color: "#111827", margin: "0 0 16px" },
text: { fontSize: "15px", lineHeight: "1.6", color: "#374151", margin: "0 0 12px" },
metaBox: { backgroundColor: "#f9fafb", borderRadius: "8px", padding: "16px", margin: "16px 0" },
metaLabel: { fontSize: "12px", color: "#6b7280", fontWeight: "600", textTransform: "uppercase" as const, margin: "0 0 4px" },
metaValue: { fontSize: "14px", color: "#111827", margin: 0 },
metaValueLarge: { fontSize: "20px", fontWeight: "700", color: "#4f46e5", margin: 0 },
table: { width: "100%", margin: "16px 0" },
tableHeader: { backgroundColor: "#f3f4f6", borderRadius: "4px" },
tableHeaderText: { fontSize: "12px", fontWeight: "600", color: "#374151", padding: "8px 12px", textTransform: "uppercase" as const },
tableRowEven: { backgroundColor: "#ffffff" },
tableRowOdd: { backgroundColor: "#f9fafb" },
tableCell: { fontSize: "14px", color: "#374151", padding: "10px 12px" },
divider: { borderColor: "#e5e5e5", margin: "8px 0" },
totalLabel: { fontSize: "16px", fontWeight: "700", color: "#111827", padding: "8px 12px" },
totalValue: { fontSize: "16px", fontWeight: "700", color: "#111827", textAlign: "right" as const, padding: "8px 12px" },
button: { backgroundColor: "#4f46e5", color: "#fff", borderRadius: "6px", padding: "12px 24px", fontSize: "15px", fontWeight: "600", textDecoration: "none" },
}
// emails/lib/send.ts
import { Resend } from "resend"
import { render } from "@react-email/render"
import { WelcomeEmail } from "../templates/welcome"
import { InvoiceEmail } from "../templates/invoice"
import { addTrackingParams } from "./tracking"
const resend = new Resend(process.env.RESEND_API_KEY)
type EmailPayload =
| { type: "welcome"; props: Parameters<typeof WelcomeEmail>[0] }
| { type: "invoice"; props: Parameters<typeof InvoiceEmail>[0] }
export async function sendEmail(to: string, payload: EmailPayload) {
const templates = {
welcome: { component: WelcomeEmail, subject: "Welcome to MyApp — confirm your email" },
invoice: { component: InvoiceEmail, subject: `Invoice from MyApp` },
}
const template = templates[payload.type]
const html = render(template.component(payload.props as any))
const trackedHtml = addTrackingParams(html, { campaign: payload.type })
const result = await resend.emails.send({
from: "MyApp <hello@yourapp.com>",
to,
subject: template.subject,
html: trackedHtml,
tags: [{ name: "email-type", value: payload.type }],
})
return result
}
// package.json scripts
{
"scripts": {
"email:dev": "email dev --dir emails/templates --port 3001",
"email:build": "email export --dir emails/templates --outDir emails/out"
}
}
// Run: npm run email:dev
// Opens: http://localhost:3001
// Shows all templates with live preview and hot reload
// emails/i18n/en.ts
export const en = {
welcome: {
preview: (name: "string-welcome-to-myapp-name"
heading: (name: "string-welcome-to-myapp-name"
body: (days: number) => `You've got ${days} days to explore everything.`,
cta: "Confirm Email Address",
},
}
// emails/i18n/de.ts
export const de = {
welcome: {
preview: (name: "string-willkommen-bei-myapp-name"
heading: (name: "string-willkommen-bei-myapp-name"
body: (days: number) => `Du hast ${days} Tage Zeit, alles zu erkunden.`,
cta: "E-Mail-Adresse bestätigen",
},
}
// Usage in template
import { en, de } from "../i18n"
const t = locale === "de" ? de : en
// emails/lib/tracking.ts
interface TrackingParams {
campaign: string
medium?: string
source?: string
}
export function addTrackingParams(html: string, params: TrackingParams): string {
const utmString = new URLSearchParams({
utm_source: params.source ?? "email",
utm_medium: params.medium ?? "transactional",
utm_campaign: params.campaign,
}).toString()
// Add UTM params to all links in the email
return html.replace(/href="(https?:\/\/[^"]+)"/g, (match, url) => {
const separator = url.includes("?") ? "&" : "?"
return `href="${url}${separator}${utmString}"`
})
}
<head> styles; React Email handles this<Row> and <Column> from react-email, not CSS grid!important to override inline stylesImplement — Email Template Builder
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