diff --git a/.phase15-state.json b/.phase15-state.json
index 988b051..1fc69fd 100644
--- a/.phase15-state.json
+++ b/.phase15-state.json
@@ -1,9 +1,10 @@
 {
   "completed_features": [],
-  "current_feature": "password-reset",
+  "current_feature": "weekly-summary-email-stub",
   "started_at": "2026-05-23T06:57:51.069062",
   "attempted_features": [
     "saved-views",
-    "webhook-trigger-events"
+    "webhook-trigger-events",
+    "password-reset"
   ]
 }
\ No newline at end of file
diff --git a/GENERATION_LOG.md b/GENERATION_LOG.md
index eb64bee..f5cf8cb 100644
--- a/GENERATION_LOG.md
+++ b/GENERATION_LOG.md
@@ -1818,3 +1818,22 @@ src/index.ts(27,25): error TS2769: No overload matches this call.
   Overload 2 of 3, '(plugin: FastifyPluginAsync<{ limits: { fileSize: number; }; }, RawServerDefault, FastifyTypeProvider, FastifyBaseLogger>, opts?: FastifyRegisterOptions<...> | undefined): FastifyInstance<...> & PromiseLike<...>', gave the following error.
     Argument of type 'Promise<FastifyMultipartPlugin>' is not assignable to parameter of type 'FastifyPluginAsync<{ limits: { fileSize: number; }; }, RawServerDefault, FastifyTypeProvider, FastifyBaseLogger>'.
       Type 'Promise<FastifyMultipartPlugin>' provides no match for the signature '(instance: FastifyInstance<RawServerDefault, IncomingMessage, ServerResponse<IncomingMessage>, FastifyBaseLogger, FastifyTy
+- `07:04:26` **INFO**   Committed feature password-reset
+- `07:04:27` **INFO**   Pushed: rc=0
+
+## Phase-3 Feature: weekly-summary-email-stub (2026-05-23 07:04:27)
+
+- `07:04:27` **INFO** Description: Cron-stub für weekly-summary-email (Endpoint manuell triggerbar)
+- `07:04:27` **INFO**   Generating apps/api/src/routes/notifications.ts (Fastify-Plugin /api/notifications. POST /send-weekly-summary (admin-on…)
+- `07:04:37` **INFO**     wrote 1088 chars in 9.8s (attempt 1)
+- `07:04:37` **INFO**   Generating apps/api/src/services/email.ts (ERWEITERT — füge sendWeeklySummary(user) Methode. Fetched user's time-…)
+- `07:04:55` **INFO**     wrote 2190 chars in 18.4s (attempt 1)
+- `07:04:55` **INFO** Running tsc --noEmit on api…
+- `07:04:57` **WARN**   tsc errors:
+src/index.ts(27,25): error TS2769: No overload matches this call.
+  Overload 1 of 3, '(plugin: FastifyPluginCallback<{ limits: { fileSize: number; }; }, RawServerDefault, FastifyTypeProvider, FastifyBaseLogger>, opts?: FastifyRegisterOptions<...> | undefined): FastifyInstance<...> & PromiseLike<...>', gave the following error.
+    Argument of type 'Promise<FastifyMultipartPlugin>' is not assignable to parameter of type 'FastifyPluginCallback<{ limits: { fileSize: number; }; }, RawServerDefault, FastifyTypeProvider, FastifyBaseLogger>'.
+      Type 'Promise<FastifyMultipartPlugin>' provides no match for the signature '(instance: FastifyInstance<RawServerDefault, IncomingMessage, ServerResponse<IncomingMessage>, FastifyBaseLogger, FastifyTypeProvider>, opts: { ...; }, done: (err?: Error | undefined) => void): void'.
+  Overload 2 of 3, '(plugin: FastifyPluginAsync<{ limits: { fileSize: number; }; }, RawServerDefault, FastifyTypeProvider, FastifyBaseLogger>, opts?: FastifyRegisterOptions<...> | undefined): FastifyInstance<...> & PromiseLike<...>', gave the following error.
+    Argument of type 'Promise<FastifyMultipartPlugin>' is not assignable to parameter of type 'FastifyPluginAsync<{ limits: { fileSize: number; }; }, RawServerDefault, FastifyTypeProvider, FastifyBaseLogger>'.
+      Type 'Promise<FastifyMultipartPlugin>' provides no match for the signature '(instance: FastifyInstance<RawServerDefault, IncomingMessage, ServerResponse<IncomingMessage>, FastifyBaseLogger, FastifyTy
diff --git a/apps/api/src/routes/auth.ts b/apps/api/src/routes/auth.ts
index beb058e..ec27583 100644
--- a/apps/api/src/routes/auth.ts
+++ b/apps/api/src/routes/auth.ts
@@ -4,7 +4,7 @@ import { db } from "../db"
 import { users, passwordResets } from "../db/schema"
 import { eq, and, gt } from "drizzle-orm"
 import { LoginRequestSchema, ForgotPasswordRequestSchema, ResetPasswordRequestSchema } from "@emberclone/shared"
-import { emailService } from "../services/emailService"
+import { emailService } from "../services/email"
 import { randomBytes } from "crypto"
 
 export default async function authRoutes(fastify: FastifyInstance) {
diff --git a/apps/api/src/routes/notifications.ts b/apps/api/src/routes/notifications.ts
new file mode 100644
index 0000000..624c9d7
--- /dev/null
+++ b/apps/api/src/routes/notifications.ts
@@ -0,0 +1,38 @@
+import { FastifyInstance } from "fastify"
+import { db } from "../db"
+import { users } from "../db/schema"
+import { emailService } from "../services/email"
+
+export default async function notificationRoutes(fastify: FastifyInstance) {
+  fastify.addHook("preHandler", async (request, reply) => {
+    try {
+      await request.jwtVerify()
+    } catch (err) {
+      return reply.code(401).send({ message: "Unauthorized" })
+    }
+  })
+
+  const isAdmin = (request: any) => {
+    return (request.user as { sub: string, role: string })?.role === "admin"
+  }
+
+  fastify.post("/send-weekly-summary", async (request, reply) => {
+    if (!isAdmin(request)) {
+      return reply.code(403).send({ message: "Forbidden: Admin role required" })
+    }
+
+    const allUsers = await db.select().from(users)
+    let sentCount = 0
+
+    for (const user of allUsers) {
+      try {
+        await emailService.sendWeeklySummary(user)
+        sentCount++
+      } catch (error) {
+        fastify.log.error(`Failed to send weekly summary to ${user.email}: ${error}`)
+      }
+    }
+
+    return { sent: sentCount }
+  })
+}
\ No newline at end of file
diff --git a/apps/api/src/services/email.ts b/apps/api/src/services/email.ts
index 5e977c4..9faf447 100644
--- a/apps/api/src/services/email.ts
+++ b/apps/api/src/services/email.ts
@@ -1,4 +1,7 @@
 import type { UserSelect as User } from "@emberclone/shared";
+import { db } from "../db";
+import { timeEntries } from "../db/schema";
+import { and, eq, gte } from "drizzle-orm";
 
 class EmailService {
   private async send(to: string, subject: string, body: string) {
@@ -28,6 +31,27 @@ class EmailService {
     const body = `Hi ${user.name || "there"}, this is your daily reminder to check your EmberClone dashboard!`;
     await this.send(user.email, subject, body);
   }
+
+  async sendWeeklySummary(user: User) {
+    const oneWeekAgo = new Date();
+    oneWeekAgo.setDate(oneWeekAgo.getDate() - 7);
+
+    const entries = await db
+      .select()
+      .from(timeEntries)
+      .where(
+        and(
+          eq(timeEntries.userId, user.id),
+          gte(timeEntries.createdAt, oneWeekAgo)
+        )
+      );
+
+    const totalHours = entries.reduce((acc, entry) => acc + (entry.duration || 0), 0) / 60;
+    const subject = "Your Weekly Summary";
+    const body = `Hi ${user.name || "there"},\n\nHere is your summary for the last 7 days:\n- Total entries: ${entries.length}\n- Total time tracked: ${totalHours.toFixed(2)} hours\n\nKeep up the great work!`;
+    
+    await this.send(user.email, subject, body);
+  }
 }
 
 export const emailService = new EmailService();
\ No newline at end of file