feat: add EMAIL_FROM env var for configurable sender address

Allow staging and production to use different sender addresses
without requiring separate Mailgun domains.

Author: zainfathoni

.env.example

@@ -11,6 +11,7 @@ DATABASE_URL="file:./dev.db"
 # Check the logs which print out the content of every "email" sent for any manual verification you need to do or links you need to open
 MAILGUN_SENDING_KEY=key-some-mailgun-key
 MAILGUN_DOMAIN=some.domain.com
+EMAIL_FROM=Rumah Berbagi <admin@rumahberbagi.com>
 
 # Feature: authentication
 # Mocked: Unnecessary (any value can be used)

app/services/email.server.tsx

@@ -4,6 +4,11 @@ import type { SendEmailFunction } from 'remix-auth-email-link'
 import * as emailProvider from '~/services/email-provider.server'
 import { writeFixture } from '~/utils/fixtures'
 
+let emailFrom = 'Rumah Berbagi <admin@rumahberbagi.com>'
+if (process.env.EMAIL_FROM) {
+  emailFrom = process.env.EMAIL_FROM
+}
+
 export const sendEmail: SendEmailFunction<User> = async (options) => {
   const subject = 'Link login untuk Kelas Rumah Berbagi'
   const body = renderToString(
@@ -42,7 +47,7 @@ export const sendEmail: SendEmailFunction<User> = async (options) => {
   } else {
     await emailProvider.sendEmail({
       to: options.emailAddress,
-      from: 'Rumah Berbagi <admin@rumahberbagi.com>',
+      from: emailFrom,
       subject,
       html: body,
     })