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+# Shared email settings
+FROM_EMAIL=email@yourdomain.com
+TO_EMAIL=contact@yourdomain.com,other@yourdomain.com
+
+# CORS (comma-separated)
+ALLOWED_ORIGINS=https://www.yourdomain.com,https://www.otherdomain.com
+
+# Multi-provider email config
+# Choose a provider, then uncomment and fill in its variables.
+
+# resend
+# EMAIL_PROVIDER=resend
+# RESEND_API_KEY=re_xxxxxxxxxx # Resend API key
+
+# nodemailer
+# EMAIL_PROVIDER=nodemailer
+# SMTP_CONFIG={"host":"smtp.gmail.com","port":587,"secure":false,"auth":{"user":"your@gmail.com","pass":"app-password"}}
+