diff --git a/server/src/index.js b/server/src/index.js
index c5bf3be..4e8e07e 100644
--- a/server/src/index.js
+++ b/server/src/index.js
@@ -8,6 +8,15 @@ import path from 'node:path'
 import { ensureAdminUser } from './lib/bootstrap-admin.js'
 import { getOrCreateUnspecifiedCategory } from './lib/default-category.js'
 import { getMaxUploadBodyBytes, getProductImageMaxFileBytes } from './lib/upload-limits.js'
+import { createEventBus } from './lib/notifications/event-bus.js'
+import { createNotificationQueue } from './lib/notifications/queue.js'
+import { prisma } from './lib/prisma.js'
+import {
+  resolveUserNotificationTargets,
+  resolveAdminNotificationTargets,
+  resolveAuthCodeTargets,
+} from './lib/notifications/preferences.js'
+import { NOTIFICATION_EVENTS, NOTIFICATION_CHANNELS } from './shared/constants/notification-events.js'
 import { registerAuth } from './plugins/auth.js'
 import { registerApiRoutes } from './routes/api.js'
 import { registerAuthRoutes } from './routes/auth.js'
@@ -16,6 +25,7 @@ import { registerUserCartRoutes } from './routes/user-cart.js'
 import { registerUserMessageRoutes } from './routes/user-messages.js'
 import { registerUserOrderRoutes } from './routes/user-orders.js'
 import { registerUserPaymentRoutes } from './routes/user-payments.js'
+import { registerUserNotificationRoutes } from './routes/user/notifications.js'
 import { registerOAuthSocialRoutes } from './routes/oauth-social.js'
 import { registerUploadsResized } from './routes/uploads-resized.js'
 
@@ -42,7 +52,6 @@ await fastify.register(jwt, {
 await fastify.register(multipart, {
   limits: {
     files: 10,
-    /** Совпадает с лимитом одного файла для `POST /api/admin/gallery/upload` (галерея). */
     fileSize: getProductImageMaxFileBytes(),
   },
 })
@@ -70,6 +79,11 @@ fastify.decorate('authenticate', async function authenticate(request, reply) {
   }
 })
 
+const eventBus = createEventBus()
+const notificationQueue = createNotificationQueue()
+fastify.decorate('eventBus', eventBus)
+fastify.decorate('notificationQueue', notificationQueue)
+
 registerAuth(fastify)
 await registerAuthRoutes(fastify)
 await registerUserAddressRoutes(fastify)
@@ -77,12 +91,70 @@ await registerUserCartRoutes(fastify)
 await registerUserMessageRoutes(fastify)
 await registerUserOrderRoutes(fastify)
 await registerUserPaymentRoutes(fastify)
+await registerUserNotificationRoutes(fastify)
 await registerOAuthSocialRoutes(fastify)
 await registerApiRoutes(fastify)
 await ensureAdminUser()
 await getOrCreateUnspecifiedCategory()
 
-fastify.get('/health', async () => ({ ok: true }))
+await notificationQueue.flushPendingOnStartup()
+notificationQueue.start()
+
+const {
+  ORDER_CREATED,
+  ORDER_STATUS_CHANGED,
+  ORDER_MESSAGE_SENT,
+  ORDER_MESSAGE_ADMIN_REPLY,
+  PAYMENT_STATUS_CHANGED,
+  AUTH_CODE_REQUESTED,
+} = NOTIFICATION_EVENTS
+
+async function dispatchNotification(eventType, payload) {
+  const userTargets = await resolveUserNotificationTargets(eventType, payload)
+  for (const target of userTargets) {
+    const log = await prisma.notificationLog.create({
+      data: {
+        userId: payload.userId,
+        eventType,
+        channel: target.channel,
+        status: 'pending',
+        payload: JSON.stringify(payload),
+      },
+    })
+    notificationQueue.enqueue({ ...target, eventType, payload, logId: log.id })
+  }
+
+  const adminEventType = eventType === 'order:created:admin' ? ORDER_CREATED : eventType
+  const adminTargets = await resolveAdminNotificationTargets(adminEventType, payload)
+  for (const target of adminTargets) {
+    const log = await prisma.notificationLog.create({
+      data: {
+        eventType,
+        channel: target.channel,
+        status: 'pending',
+        payload: JSON.stringify(payload),
+      },
+    })
+    notificationQueue.enqueue({ ...target, eventType, payload, logId: log.id })
+  }
+}
+
+eventBus.on(ORDER_CREATED, dispatchNotification)
+eventBus.on(ORDER_STATUS_CHANGED, dispatchNotification)
+eventBus.on(ORDER_MESSAGE_SENT, dispatchNotification)
+eventBus.on(ORDER_MESSAGE_ADMIN_REPLY, dispatchNotification)
+eventBus.on(PAYMENT_STATUS_CHANGED, dispatchNotification)
+eventBus.on(AUTH_CODE_REQUESTED, dispatchNotification)
+eventBus.on('order:created:admin', dispatchNotification)
+eventBus.on('review:created', dispatchNotification)
+
+async function shutdown() {
+  notificationQueue.stop()
+  await fastify.close()
+  process.exit(0)
+}
+process.on('SIGINT', shutdown)
+process.on('SIGTERM', shutdown)
 
 try {
   await fastify.listen({ port, host: '0.0.0.0' })
diff --git a/server/src/routes/api.js b/server/src/routes/api.js
index b0c30c7..ebeac37 100644
--- a/server/src/routes/api.js
+++ b/server/src/routes/api.js
@@ -10,6 +10,7 @@ import { registerAdminOrderRoutes } from './api/admin-orders.js'
 import { registerAdminProductRoutes } from './api/admin-products.js'
 import { registerAdminReviewRoutes } from './api/admin-reviews.js'
 import { registerAdminUserRoutes } from './api/admin-users.js'
+import { registerAdminNotificationRoutes } from './api/admin/notifications.js'
 import { registerInfoPageRoutes } from './api/info-page.js'
 import { registerPublicCatalogRoutes } from './api/public-catalog.js'
 import { registerPublicReviewRoutes } from './api/public-reviews.js'
@@ -30,5 +31,6 @@ export async function registerApiRoutes(fastify) {
   await registerAdminOrderRoutes(fastify)
   await registerAdminReviewRoutes(fastify)
   await registerAdminUserRoutes(fastify)
+  await registerAdminNotificationRoutes(fastify)
 }
 
diff --git a/server/src/routes/api/admin/notifications.js b/server/src/routes/api/admin/notifications.js
new file mode 100644
index 0000000..44b5bcd
--- /dev/null
+++ b/server/src/routes/api/admin/notifications.js
@@ -0,0 +1,89 @@
+import { prisma } from '../../lib/prisma.js'
+
+export async function registerAdminNotificationRoutes(fastify) {
+  fastify.get(
+    '/api/admin/notifications/settings',
+    { preHandler: [fastify.verifyAdmin] },
+    async () => {
+      let settings = await prisma.adminNotificationSettings.findFirst()
+      if (!settings) {
+        settings = await prisma.adminNotificationSettings.create({
+          data: {
+            emailEnabled: true,
+            telegramEnabled: false,
+            newOrder: true,
+            newOrderMessage: true,
+            newReview: true,
+            authCodeDuplicate: false,
+          },
+        })
+      }
+      return { settings }
+    },
+  )
+
+  fastify.put(
+    '/api/admin/notifications/settings',
+    { preHandler: [fastify.verifyAdmin] },
+    async (request) => {
+      const body = request.body || {}
+      let settings = await prisma.adminNotificationSettings.findFirst()
+
+      const data = {}
+      if ('emailEnabled' in body) data.emailEnabled = Boolean(body.emailEnabled)
+      if ('telegramEnabled' in body) data.telegramEnabled = Boolean(body.telegramEnabled)
+      if ('telegramChatId' in body) data.telegramChatId = body.telegramChatId || null
+      if ('newOrder' in body) data.newOrder = Boolean(body.newOrder)
+      if ('newOrderMessage' in body) data.newOrderMessage = Boolean(body.newOrderMessage)
+      if ('newReview' in body) data.newReview = Boolean(body.newReview)
+      if ('authCodeDuplicate' in body) data.authCodeDuplicate = Boolean(body.authCodeDuplicate)
+
+      if (!settings) {
+        settings = await prisma.adminNotificationSettings.create({ data })
+      } else {
+        settings = await prisma.adminNotificationSettings.update({
+          where: { id: settings.id },
+          data,
+        })
+      }
+
+      return { settings }
+    },
+  )
+
+  fastify.post(
+    '/api/admin/notifications/telegram/webhook',
+    async (request) => {
+      const update = request.body || {}
+      const message = update.message
+      if (!message || !message.text || message.text !== '/start') return { ok: true }
+
+      const chatId = String(message.chat.id)
+      const settings = await prisma.adminNotificationSettings.findFirst()
+
+      if (settings) {
+        await prisma.adminNotificationSettings.update({
+          where: { id: settings.id },
+          data: { telegramChatId: chatId },
+        })
+      } else {
+        await prisma.adminNotificationSettings.create({
+          data: { telegramChatId: chatId },
+        })
+      }
+
+      if (process.env.TELEGRAM_BOT_TOKEN) {
+        await fetch(`https://api.telegram.org/bot${process.env.TELEGRAM_BOT_TOKEN}/sendMessage`, {
+          method: 'POST',
+          headers: { 'Content-Type': 'application/json' },
+          body: JSON.stringify({
+            chat_id: chatId,
+            text: 'Вы подписаны на уведомления Craftshop.',
+          }),
+        })
+      }
+
+      return { ok: true }
+    },
+  )
+}
diff --git a/server/src/routes/user/notifications.js b/server/src/routes/user/notifications.js
new file mode 100644
index 0000000..a984659
--- /dev/null
+++ b/server/src/routes/user/notifications.js
@@ -0,0 +1,38 @@
+import { prisma } from '../../lib/prisma.js'
+import { ensureUserNotificationPreference } from '../../lib/notifications/preferences.js'
+
+export async function registerUserNotificationRoutes(fastify) {
+  fastify.get(
+    '/api/me/notifications/settings',
+    { preHandler: [fastify.authenticate] },
+    async (request) => {
+      const userId = request.user.sub
+      const prefs = await ensureUserNotificationPreference(userId)
+      return { settings: prefs }
+    },
+  )
+
+  fastify.put(
+    '/api/me/notifications/settings',
+    { preHandler: [fastify.authenticate] },
+    async (request) => {
+      const userId = request.user.sub
+      const body = request.body || {}
+
+      const data = {}
+      if ('globalEnabled' in body) data.globalEnabled = Boolean(body.globalEnabled)
+      if ('orderCreated' in body) data.orderCreated = Boolean(body.orderCreated)
+      if ('orderStatusChanged' in body) data.orderStatusChanged = Boolean(body.orderStatusChanged)
+      if ('orderMessageReceived' in body) data.orderMessageReceived = Boolean(body.orderMessageReceived)
+      if ('paymentStatusChanged' in body) data.paymentStatusChanged = Boolean(body.paymentStatusChanged)
+
+      const prefs = await prisma.notificationPreference.upsert({
+        where: { userId },
+        create: { userId, ...data },
+        update: data,
+      })
+
+      return { settings: prefs }
+    },
+  )
+}