@i18n-email/resend

Resend integration for i18n-email. Wraps a Resend instance so emails.send() accepts an optional locale field — when set, the email is translated before sending.

Install

bun add @i18n-email/resend
# or
npm install @i18n-email/resend

Requires i18n-email, resend, and react as peer dependencies.

Usage

import { Resend } from "resend";
import { withResend } from "@i18n-email/resend";
import { WelcomeEmail } from "./emails/welcome";

const resend = withResend(new Resend("re_..."), {
  openaiApiKey: "sk-...",
});

// Translated — locale is set
await resend.emails.send({
  from: "[email protected]",
  to: "[email protected]",
  locale: "fr",
  subject: "Welcome!",
  react: <WelcomeEmail name="Dan" />,
});

// Not translated — no locale, works like normal Resend
await resend.emails.send({
  from: "[email protected]",
  to: "[email protected]",
  subject: "Welcome!",
  react: <WelcomeEmail name="Dan" />,
});

All other Resend methods (emails.get, contacts, domains, etc.) are untouched.

API

withResend(resend, i18nOptions)

| Parameter | Type | Description | | ------------- | ----------------- | ----------------------------------------------- | | resend | Resend | A Resend instance | | i18nOptions | I18nEmailConfig | Same config object as createI18nEmail accepts |

Returns an I18nResend — a proxied Resend instance where emails.send() accepts an optional locale field.

When locale is set:

1. The subject and react/html are translated via i18n-email
2. The locale field is stripped before calling Resend
3. Resend receives the translated subject and html

When locale is omitted, the call passes through to Resend unchanged.