diff --git a/.env.example b/.env.example
index a8efb79..3685082 100644
--- a/.env.example
+++ b/.env.example
@@ -24,7 +24,8 @@ REFRESH_TOKEN_TTL_DAYS=14
 SMTP_HOST=
 SMTP_PORT=587
 SMTP_USER=
-SMTP_PASS=
+SMTP_PASS=                              # Traditional password auth
+SMTP_TOKEN=                             # OAuth2/App token auth (takes precedence over SMTP_PASS)
 SMTP_FROM=
 SMTP_SECURE=false
 
diff --git a/backend/src/routes/planner.ts b/backend/src/routes/planner.ts
index 58e1ba0..0852913 100644
--- a/backend/src/routes/planner.ts
+++ b/backend/src/routes/planner.ts
@@ -44,7 +44,7 @@ export async function plannerRoutes(app: FastifyInstance) {
 
     const smtpHost = process.env.SMTP_HOST;
     const smtpUser = process.env.SMTP_USER;
-    const smtpPass = process.env.SMTP_PASS;
+    const smtpPass = process.env.SMTP_TOKEN || process.env.SMTP_PASS; // Token takes precedence
     const smtpPort = parseInt(process.env.SMTP_PORT ?? "587");
     const smtpSecure = process.env.SMTP_SECURE === "true";
     const smtpFrom = process.env.SMTP_FROM ?? smtpUser;
@@ -190,7 +190,7 @@ Sent from MedAssist-ng Medication Planner`;
     if (notificationSettings.emailEnabled && email) {
       const smtpHost = process.env.SMTP_HOST;
       const smtpUser = process.env.SMTP_USER;
-      const smtpPass = process.env.SMTP_PASS;
+      const smtpPass = process.env.SMTP_TOKEN || process.env.SMTP_PASS; // Token takes precedence
       const smtpPort = parseInt(process.env.SMTP_PORT ?? "587");
       const smtpSecure = process.env.SMTP_SECURE === "true";
       const smtpFrom = process.env.SMTP_FROM ?? smtpUser;
diff --git a/backend/src/routes/settings.ts b/backend/src/routes/settings.ts
index 5458a43..4d99a5b 100644
--- a/backend/src/routes/settings.ts
+++ b/backend/src/routes/settings.ts
@@ -136,7 +136,7 @@ export async function settingsRoutes(app: FastifyInstance) {
       smtpUser: process.env.SMTP_USER ?? "",
       smtpFrom: process.env.SMTP_FROM ?? "",
       smtpSecure: process.env.SMTP_SECURE === "true",
-      hasSmtpPassword: !!process.env.SMTP_PASS,
+      hasSmtpPassword: !!(process.env.SMTP_TOKEN || process.env.SMTP_PASS),
       // Reminder state
       lastAutoEmailSent: reminderState.lastAutoEmailSent,
       nextScheduledCheck: reminderState.nextScheduledCheck,
@@ -188,7 +188,7 @@ export async function settingsRoutes(app: FastifyInstance) {
     
     const smtpHost = process.env.SMTP_HOST;
     const smtpUser = process.env.SMTP_USER;
-    const smtpPass = process.env.SMTP_PASS;
+    const smtpPass = process.env.SMTP_TOKEN || process.env.SMTP_PASS; // Token takes precedence
     const smtpPort = parseInt(process.env.SMTP_PORT ?? "587");
     const smtpSecure = process.env.SMTP_SECURE === "true";
     const smtpFrom = process.env.SMTP_FROM ?? smtpUser;
diff --git a/backend/src/services/intake-reminder-scheduler.ts b/backend/src/services/intake-reminder-scheduler.ts
index db80463..88a8482 100644
--- a/backend/src/services/intake-reminder-scheduler.ts
+++ b/backend/src/services/intake-reminder-scheduler.ts
@@ -130,7 +130,7 @@ function getUpcomingIntakes(medName: string, slices: Slice[], minutesBefore: num
 async function sendIntakeReminderEmail(email: string, intakes: UpcomingIntake[], language: Language): Promise<{ success: boolean; error?: string }> {
   const smtpHost = process.env.SMTP_HOST;
   const smtpUser = process.env.SMTP_USER;
-  const smtpPass = process.env.SMTP_PASS;
+  const smtpPass = process.env.SMTP_TOKEN || process.env.SMTP_PASS; // Token takes precedence
   const smtpPort = parseInt(process.env.SMTP_PORT ?? "587");
   const smtpSecure = process.env.SMTP_SECURE === "true";
   const smtpFrom = process.env.SMTP_FROM ?? smtpUser;
diff --git a/backend/src/services/reminder-scheduler.ts b/backend/src/services/reminder-scheduler.ts
index d00945a..1969bb8 100644
--- a/backend/src/services/reminder-scheduler.ts
+++ b/backend/src/services/reminder-scheduler.ts
@@ -258,7 +258,7 @@ async function getMedicationsNeedingReminder(reminderDaysBefore: number, languag
 async function sendReminderEmail(email: string, lowStock: LowStockItem[], language: Language, isRepeatDaily: boolean = false): Promise<{ success: boolean; error?: string }> {
   const smtpHost = process.env.SMTP_HOST;
   const smtpUser = process.env.SMTP_USER;
-  const smtpPass = process.env.SMTP_PASS;
+  const smtpPass = process.env.SMTP_TOKEN || process.env.SMTP_PASS; // Token takes precedence
   const smtpPort = parseInt(process.env.SMTP_PORT ?? "587");
   const smtpSecure = process.env.SMTP_SECURE === "true";
   const smtpFrom = process.env.SMTP_FROM ?? smtpUser;