2 replies

Additional parameters in Email config

I'm using

@convex-dev/auth/providers/Email

@convex-dev/auth/providers/Email

to send verification emails and want to support multiple languages (e.g., 'en', 'ko') based on user settings. However, the current

sendVerificationRequest

sendVerificationRequest

doesn't accept custom parameters like

customData

customData

to pass locale info, forcing me to hardcode templates (e.g., 'en').

#### Current Code

import { Email } from '@convex-dev/auth/providers/Email';
import { Resend as ResendAPI } from 'resend';
import { alphabet, generateRandomString } from 'oslo/crypto';

type Locale = 'en' | 'ko';
const emailTemplates: Record<Locale, { subject: string; text: (token: string) => string }> = {
  en: { subject: 'Verify your email', text: (token) => `Code: ${token}` },
  ko: { subject: '이메일 인증', text: (token) => `코드: ${token}` },
};

export const ResendOTP = Email({
  id: 'resend-otp',
  apiKey: process.env.AUTH_RESEND_KEY,
  async generateVerificationToken() { return generateRandomString(8, alphabet('0-9')); },
  async sendVerificationRequest({ identifier: email, provider, token }) {
    const template = emailTemplates['en']; // Hardcoded, no locale support
    const resend = new ResendAPI(provider.apiKey);
    await resend.emails.send({ from: 'Auth <onboarding@resend.dev>', to: [email], subject: template.subject, text: template.text(token) });
  },
});

import { Email } from '@convex-dev/auth/providers/Email';
import { Resend as ResendAPI } from 'resend';
import { alphabet, generateRandomString } from 'oslo/crypto';

type Locale = 'en' | 'ko';
const emailTemplates: Record<Locale, { subject: string; text: (token: string) => string }> = {
  en: { subject: 'Verify your email', text: (token) => `Code: ${token}` },
  ko: { subject: '이메일 인증', text: (token) => `코드: ${token}` },
};

export const ResendOTP = Email({
  id: 'resend-otp',
  apiKey: process.env.AUTH_RESEND_KEY,
  async generateVerificationToken() { return generateRandomString(8, alphabet('0-9')); },
  async sendVerificationRequest({ identifier: email, provider, token }) {
    const template = emailTemplates['en']; // Hardcoded, no locale support
    const resend = new ResendAPI(provider.apiKey);
    await resend.emails.send({ from: 'Auth <onboarding@resend.dev>', to: [email], subject: template.subject, text: template.text(token) });
  },
});

#### Requested Feature
Add support for passing

customData

customData

(e.g.,

{ locale: 'ko' }

{ locale: 'ko' }

) to

sendVerificationRequest

sendVerificationRequest

so I can dynamically select email templates based on locale.

#### Example

const template = emailTemplates[customData?.locale || 'en'];
await resend.emails.send({ ... });

const template = emailTemplates[customData?.locale || 'en'];
await resend.emails.send({ ... });

#### Why?
- Enables multi-language email support.
- Increases flexibility for custom email logic.

#### Current Limitation
-

sendVerificationRequest

sendVerificationRequest

only takes

{ identifier, provider, token }

{ identifier, provider, token }

, no way to pass locale.

Additional parameters in Email config

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