diff --git a/backend/src/graphql/rooms.ts b/backend/src/graphql/rooms.ts
index 2977a3dde..c9d3f54f2 100644
--- a/backend/src/graphql/rooms.ts
+++ b/backend/src/graphql/rooms.ts
@@ -30,3 +30,11 @@ export const roomQuery = () => {
     }
   `
 }
+
+export const unreadRoomsQuery = () => {
+  return gql`
+    query {
+      UnreadRooms
+    }
+  `
+}
diff --git a/backend/src/middleware/permissionsMiddleware.ts b/backend/src/middleware/permissionsMiddleware.ts
index c07098a3c..f87f4b079 100644
--- a/backend/src/middleware/permissionsMiddleware.ts
+++ b/backend/src/middleware/permissionsMiddleware.ts
@@ -408,6 +408,7 @@ export default shield(
       getInviteCode: isAuthenticated, // and inviteRegistration
       Room: isAuthenticated,
       Message: isAuthenticated,
+      UnreadRooms: isAuthenticated,
     },
     Mutation: {
       '*': deny,
diff --git a/backend/src/schema/resolvers/rooms.spec.ts b/backend/src/schema/resolvers/rooms.spec.ts
index 0978fd600..690572e43 100644
--- a/backend/src/schema/resolvers/rooms.spec.ts
+++ b/backend/src/schema/resolvers/rooms.spec.ts
@@ -1,7 +1,8 @@
 import { createTestClient } from 'apollo-server-testing'
 import Factory, { cleanDatabase } from '../../db/factories'
 import { getNeode, getDriver } from '../../db/neo4j'
-import { createRoomMutation, roomQuery } from '../../graphql/rooms'
+import { createRoomMutation, roomQuery, unreadRoomsQuery } from '../../graphql/rooms'
+import { createMessageMutation } from '../../graphql/messages'
 import createServer from '../../server'
 
 const driver = getDriver()
@@ -34,6 +35,8 @@ afterAll(async () => {
 })
 
 describe('Room', () => {
+  let roomId: string
+
   beforeAll(async () => {
     ;[chattingUser, otherChattingUser, notChattingUser] = await Promise.all([
       Factory.build('user', {
@@ -76,8 +79,6 @@ describe('Room', () => {
     })
 
     describe('authenticated', () => {
-      let roomId: string
-
       beforeAll(async () => {
         authenticatedUser = await chattingUser.toJson()
       })
@@ -269,6 +270,117 @@ describe('Room', () => {
     })
   })
 
+  describe('unread rooms query', () => {
+    describe('unauthenticated', () => {
+      it('throws authorization error', async () => {
+        authenticatedUser = null
+        await expect(
+          query({
+            query: unreadRoomsQuery(),
+          }),
+        ).resolves.toMatchObject({
+          errors: [{ message: 'Not Authorized!' }],
+        })
+      })
+    })
+
+    describe('authenticated', () => {
+      let otherRoomId: string
+
+      beforeAll(async () => {
+        authenticatedUser = await chattingUser.toJson()
+        const result = await mutate({
+          mutation: createRoomMutation(),
+          variables: {
+            userId: 'not-chatting-user',
+          },
+        })
+        otherRoomId = result.data.CreateRoom.roomId
+        await mutate({
+          mutation: createMessageMutation(),
+          variables: {
+            roomId: otherRoomId,
+            content: 'Message to not chatting user',
+          },
+        })
+        await mutate({
+          mutation: createMessageMutation(),
+          variables: {
+            roomId,
+            content: '1st message to other chatting user',
+          },
+        })
+        await mutate({
+          mutation: createMessageMutation(),
+          variables: {
+            roomId,
+            content: '2nd message to other chatting user',
+          },
+        })
+        authenticatedUser = await otherChattingUser.toJson()
+        const result2 = await mutate({
+          mutation: createRoomMutation(),
+          variables: {
+            userId: 'not-chatting-user',
+          },
+        })
+        otherRoomId = result2.data.CreateRoom.roomId
+        await mutate({
+          mutation: createMessageMutation(),
+          variables: {
+            roomId: otherRoomId,
+            content: 'Other message to not chatting user',
+          },
+        })
+      })
+
+      describe('as chatting user', () => {
+        it('has 0 unread rooms', async () => {
+          authenticatedUser = await chattingUser.toJson()
+          await expect(
+            query({
+              query: unreadRoomsQuery(),
+            }),
+          ).resolves.toMatchObject({
+            data: {
+              UnreadRooms: 0,
+            },
+          })
+        })
+      })
+
+      describe('as other chatting user', () => {
+        it('has 1 unread rooms', async () => {
+          authenticatedUser = await otherChattingUser.toJson()
+          await expect(
+            query({
+              query: unreadRoomsQuery(),
+            }),
+          ).resolves.toMatchObject({
+            data: {
+              UnreadRooms: 1,
+            },
+          })
+        })
+      })
+
+      describe('as not chatting user', () => {
+        it('has 2 unread rooms', async () => {
+          authenticatedUser = await notChattingUser.toJson()
+          await expect(
+            query({
+              query: unreadRoomsQuery(),
+            }),
+          ).resolves.toMatchObject({
+            data: {
+              UnreadRooms: 2,
+            },
+          })
+        })
+      })
+    })
+  })
+
   describe('query several rooms', () => {
     beforeAll(async () => {
       authenticatedUser = await chattingUser.toJson()
@@ -287,7 +399,7 @@ describe('Room', () => {
     })
 
     it('returns the rooms paginated', async () => {
-      expect(await query({ query: roomQuery(), variables: { first: 2, offset: 0 } })).toMatchObject(
+      expect(await query({ query: roomQuery(), variables: { first: 3, offset: 0 } })).toMatchObject(
         {
           errors: undefined,
           data: {
@@ -338,11 +450,34 @@ describe('Room', () => {
                   },
                 ]),
               },
+              {
+                id: expect.any(String),
+                roomId: expect.any(String),
+                roomName: 'Not Chatting User',
+                users: expect.arrayContaining([
+                  {
+                    _id: 'chatting-user',
+                    id: 'chatting-user',
+                    name: 'Chatting User',
+                    avatar: {
+                      url: expect.any(String),
+                    },
+                  },
+                  {
+                    _id: 'not-chatting-user',
+                    id: 'not-chatting-user',
+                    name: 'Not Chatting User',
+                    avatar: {
+                      url: expect.any(String),
+                    },
+                  },
+                ]),
+              },
             ],
           },
         },
       )
-      expect(await query({ query: roomQuery(), variables: { first: 2, offset: 2 } })).toMatchObject(
+      expect(await query({ query: roomQuery(), variables: { first: 3, offset: 3 } })).toMatchObject(
         {
           errors: undefined,
           data: {
diff --git a/backend/src/schema/resolvers/rooms.ts b/backend/src/schema/resolvers/rooms.ts
index d5015a03b..cbf5bcd63 100644
--- a/backend/src/schema/resolvers/rooms.ts
+++ b/backend/src/schema/resolvers/rooms.ts
@@ -25,6 +25,27 @@ export default {
       }
       return resolved
     },
+    UnreadRooms: async (object, params, context, resolveInfo) => {
+      const {
+        user: { id: currentUserId },
+      } = context
+      const session = context.driver.session()
+      const readTxResultPromise = session.readTransaction(async (transaction) => {
+        const unreadRoomsCypher = `
+          MATCH (:User { id: $currentUserId })-[:CHATS_IN]->(room:Room)<-[:INSIDE]-(message:Message)<-[:CREATED]-(sender:User)
+          WHERE NOT sender.id = $currentUserId AND NOT message.seen
+          RETURN toString(COUNT(DISTINCT room)) AS count
+        `
+        const unreadRoomsTxResponse = await transaction.run(unreadRoomsCypher, { currentUserId })
+        return unreadRoomsTxResponse.records.map((record) => record.get('count'))[0]
+      })
+      try {
+        const count = await readTxResultPromise
+        return count
+      } finally {
+        session.close()
+      }
+    },
   },
   Mutation: {
     CreateRoom: async (_parent, params, context, _resolveInfo) => {
diff --git a/backend/src/schema/types/type/Room.gql b/backend/src/schema/types/type/Room.gql
index 82acd9e05..80f61c83a 100644
--- a/backend/src/schema/types/type/Room.gql
+++ b/backend/src/schema/types/type/Room.gql
@@ -33,4 +33,5 @@ type Query {
     id: ID
     orderBy: [_RoomOrdering]
   ): [Room]
+  UnreadRooms: Int
 }
diff --git a/webapp/components/ChatNotificationMenu/ChatNotificationMenu.vue b/webapp/components/ChatNotificationMenu/ChatNotificationMenu.vue
index fcd93ee48..016410216 100644
--- a/webapp/components/ChatNotificationMenu/ChatNotificationMenu.vue
+++ b/webapp/components/ChatNotificationMenu/ChatNotificationMenu.vue
@@ -8,18 +8,34 @@
         placement: 'bottom-start',
       }"
     >
-      <counter-icon icon="chat-bubble" :count="1" danger />
+      <counter-icon icon="chat-bubble" :count="count" danger />
     </base-button>
   </nuxt-link>
 </template>
 
 <script>
 import CounterIcon from '~/components/_new/generic/CounterIcon/CounterIcon'
+import { unreadRoomsQuery } from '~/graphql/Rooms'
 
 export default {
   name: 'ChatNotificationMenu',
   components: {
     CounterIcon,
   },
+  data() {
+    return {
+      count: 0,
+    }
+  },
+  apollo: {
+    UnreadRooms: {
+      query() {
+        return unreadRoomsQuery()
+      },
+      update({ UnreadRooms }) {
+        this.count = UnreadRooms
+      },
+    },
+  },
 }
 </script>
diff --git a/webapp/graphql/Rooms.js b/webapp/graphql/Rooms.js
index a746d34f9..e42cae2e8 100644
--- a/webapp/graphql/Rooms.js
+++ b/webapp/graphql/Rooms.js
@@ -27,3 +27,11 @@ export const createRoom = () => gql`
     }
   }
 `
+
+export const unreadRoomsQuery = () => {
+  return gql`
+    query {
+      UnreadRooms
+    }
+  `
+}