Configuraion

docker-compose.yml

@@ -73,6 +73,10 @@ services:
       STRIPE_PRICE_ID_BUSINESS_YEARLY: ${STRIPE_PRICE_ID_BUSINESS_YEARLY:-}
       # Email & Analytics
       RESEND_API_KEY: ${RESEND_API_KEY:-}
+      SMTP_HOST: ${SMTP_HOST:-smtp.qrmaster.net}
+      SMTP_PORT: ${SMTP_PORT:-465}
+      SMTP_USER: ${SMTP_USER:-timo@qrmaster.net}
+      SMTP_PASS: ${SMTP_PASS:-}
       NEXT_PUBLIC_POSTHOG_KEY: ${NEXT_PUBLIC_POSTHOG_KEY:-}
       NEXT_PUBLIC_POSTHOG_HOST: ${NEXT_PUBLIC_POSTHOG_HOST:-https://us.i.posthog.com}
       # Cloudflare R2 Storage

src/lib/email.ts

@@ -539,13 +539,22 @@ export async function sendAIFeatureLaunchEmail(email: string) {
 // ---------------------------------------------------------------------------
 
 function createSmtpTransport() {
+  const host = process.env.SMTP_HOST || 'smtp.qrmaster.net';
+  const port = parseInt(process.env.SMTP_PORT || '465', 10);
+  const user = process.env.SMTP_USER || 'timo@qrmaster.net';
+  const pass = process.env.SMTP_PASS?.trim();
+
+  if (!pass) {
+    throw new Error('SMTP_PASS is missing. Configure SMTP credentials before sending welcome or retention emails.');
+  }
+
   return nodemailer.createTransport({
-    host: process.env.SMTP_HOST || 'smtp.qrmaster.net',
+    host,
-    port: parseInt(process.env.SMTP_PORT || '465', 10),
+    port,
-    secure: true, // port 465 = SSL
+    secure: port === 465,
     auth: {
-      user: process.env.SMTP_USER || 'timo@qrmaster.net',
+      user,
-      pass: process.env.SMTP_PASS,
+      pass,
     },
   });
 }