diff --git a/package.json b/package.json
index 83dab75a7..5bfde13ae 100644
--- a/package.json
+++ b/package.json
@@ -125,6 +125,7 @@
     "test:userRepository": "NODE_ENV=test mocha  -t 30000 --exit -r ts-node/register ./test/pre-test-scripts.ts  ./src/repositories/userRepository.test.ts",
     "test:statusReasonRepository": "NODE_ENV=test mocha  -t 30000 --exit -r ts-node/register ./test/pre-test-scripts.ts  ./src/repositories/statusReasonRepository.test.ts",
     "test:donationRepository": "NODE_ENV=test mocha  -t 30000 --exit -r ts-node/register ./test/pre-test-scripts.ts  ./src/repositories/donationRepository.test.ts",
+    "test:reactionRepository": "NODE_ENV=test mocha  -t 30000 --exit -r ts-node/register ./test/pre-test-scripts.ts  ./src/repositories/reactionRepository.test.ts",
     "test:socialProfileRepository": "NODE_ENV=test mocha  -t 30000 --exit -r ts-node/register ./test/pre-test-scripts.ts  ./src/repositories/socialProfileRepository.test.ts",
     "test:powerBalanceSnapshotRepository": "NODE_ENV=test mocha  -t 30000 --exit -r ts-node/register ./test/pre-test-scripts.ts  ./src/repositories/powerBalanceSnapshotRepository.test.ts",
     "test:projectVerificationRepository": "NODE_ENV=test mocha  -t 30000 --exit -r ts-node/register ./test/pre-test-scripts.ts  ./src/repositories/projectVerificationRepository.test.ts",
diff --git a/src/adapters/notifications/NotificationCenterAdapter.ts b/src/adapters/notifications/NotificationCenterAdapter.ts
index 66dd27f15..e825c23c5 100644
--- a/src/adapters/notifications/NotificationCenterAdapter.ts
+++ b/src/adapters/notifications/NotificationCenterAdapter.ts
@@ -7,10 +7,39 @@ import { User } from '../../entities/user';
 import { createBasicAuthentication } from '../../utils/utils';
 import { logger } from '../../utils/logger';
 import { NOTIFICATIONS_EVENT_NAMES } from '../../analytics/analytics';
+import Bull from 'bull';
+import { redisConfig } from '../../redis';
+import config from '../../config';
+import { findUsersWhoDonatedToProject } from '../../repositories/donationRepository';
+import { findUsersWhoLikedProject } from '../../repositories/reactionRepository';
 const notificationCenterUsername = process.env.NOTIFICATION_CENTER_USERNAME;
 const notificationCenterPassword = process.env.NOTIFICATION_CENTER_PASSWORD;
 const notificationCenterBaseUrl = process.env.NOTIFICATION_CENTER_BASE_URL;
 
+const numberOfSendNotificationsConcurrentJob =
+  Number(
+    config.get('NUMBER_OF_FILLING_POWER_SNAPSHOT_BALANCE_CONCURRENT_JOB'),
+  ) || 30;
+
+interface ProjectRelatedNotificationsQueue {
+  project: Project;
+  eventName: NOTIFICATIONS_EVENT_NAMES;
+  metadata?: any;
+  user?: {
+    walletAddress: string;
+    email?: string;
+  };
+}
+
+const sendProjectRelatedNotificationsBalanceQueue =
+  new Bull<ProjectRelatedNotificationsQueue>(
+    'send-project-related-notifications',
+    {
+      redis: redisConfig,
+    },
+  );
+let isProcessingQueueEventsEnabled = false;
+
 interface SendNotificationBody {
   sendEmail?: boolean;
   eventName: string;
@@ -27,6 +56,38 @@ export class NotificationCenterAdapter implements NotificationAdapterInterface {
       userName: notificationCenterUsername,
       password: notificationCenterPassword,
     });
+    if (!isProcessingQueueEventsEnabled) {
+      // We send notifications to project owners immediately, but as donors and people
+      // who liked project can be thousands or more we enqueue them and send it by that to manage
+      // load on notification-center and make sure all of notifications would arrive
+      this.processSendingNotifications();
+      isProcessingQueueEventsEnabled = true;
+    }
+  }
+
+  processSendingNotifications() {
+    logger.debug('processSendingNotifications() has been called ', {
+      numberOfSendNotificationsConcurrentJob,
+    });
+    sendProjectRelatedNotificationsBalanceQueue.process(
+      numberOfSendNotificationsConcurrentJob,
+      async (job, done) => {
+        logger.debug('processing send notification job', job.data);
+        const { project, metadata, eventName, user } = job.data;
+        try {
+          await this.sendProjectRelatedNotification({
+            project,
+            eventName,
+            metadata,
+            user,
+          });
+        } catch (e) {
+          logger.error('processSendingNotifications >> error', e);
+        } finally {
+          done();
+        }
+      },
+    );
   }
 
   async donationReceived(params: {
@@ -78,33 +139,98 @@ export class NotificationCenterAdapter implements NotificationAdapterInterface {
     return Promise.resolve(undefined);
   }
 
-  projectCancelled(params: { project: Project }): Promise<void> {
+  async projectCancelled(params: { project: Project }): Promise<void> {
     const { project } = params;
-    return this.sendProjectRelatedNotification({
+
+    const donors = await findUsersWhoDonatedToProject(project.id);
+    donors.map(user =>
+      sendProjectRelatedNotificationsBalanceQueue.add({
+        project,
+        eventName: NOTIFICATIONS_EVENT_NAMES.PROJECT_CANCELLED_DONORS,
+        user,
+      }),
+    );
+
+    const usersWhoLiked = await findUsersWhoLikedProject(project.id);
+    usersWhoLiked.map(user =>
+      sendProjectRelatedNotificationsBalanceQueue.add({
+        project,
+        eventName: NOTIFICATIONS_EVENT_NAMES.PROJECT_CANCELLED_USERS_WHO_LIKED,
+        user,
+      }),
+    );
+
+    await this.sendProjectRelatedNotification({
       project,
       eventName: NOTIFICATIONS_EVENT_NAMES.PROJECT_CANCELLED,
     });
   }
 
-  projectDeListed(params: { project: Project }): Promise<void> {
+  async projectDeListed(params: { project: Project }): Promise<void> {
     const { project } = params;
-    return this.sendProjectRelatedNotification({
+
+    const donors = await findUsersWhoDonatedToProject(project.id);
+    donors.map(user =>
+      sendProjectRelatedNotificationsBalanceQueue.add({
+        project,
+        eventName: NOTIFICATIONS_EVENT_NAMES.PROJECT_UNLISTED_DONORS,
+        user,
+      }),
+    );
+
+    const usersWhoLiked = await findUsersWhoLikedProject(project.id);
+    usersWhoLiked.map(user =>
+      sendProjectRelatedNotificationsBalanceQueue.add({
+        project,
+        eventName: NOTIFICATIONS_EVENT_NAMES.PROJECT_UNLISTED_USERS_WHO_LIKED,
+        user,
+      }),
+    );
+    await this.sendProjectRelatedNotification({
       project,
       eventName: NOTIFICATIONS_EVENT_NAMES.PROJECT_UNLISTED,
     });
   }
 
-  projectDeactivated(params: { project: Project }): Promise<void> {
-    const { project } = params;
-    return this.sendProjectRelatedNotification({
+  async projectDeactivated(params: {
+    project: Project;
+    reason?: string;
+  }): Promise<void> {
+    const { project, reason } = params;
+    const metadata = {
+      reason,
+    };
+    const donors = await findUsersWhoDonatedToProject(project.id);
+    donors.map(user =>
+      sendProjectRelatedNotificationsBalanceQueue.add({
+        project,
+        eventName: NOTIFICATIONS_EVENT_NAMES.PROJECT_DEACTIVATED_DONORS,
+        user,
+        metadata,
+      }),
+    );
+
+    const usersWhoLiked = await findUsersWhoLikedProject(project.id);
+    usersWhoLiked.map(user =>
+      sendProjectRelatedNotificationsBalanceQueue.add({
+        project,
+        eventName:
+          NOTIFICATIONS_EVENT_NAMES.PROJECT_DEACTIVATED_USERS_WHO_LIKED,
+        user,
+        metadata,
+      }),
+    );
+    await this.sendProjectRelatedNotification({
       project,
       eventName: NOTIFICATIONS_EVENT_NAMES.PROJECT_DEACTIVATED,
+      metadata,
     });
   }
 
-  projectListed(params: { project: Project }): Promise<void> {
+  async projectListed(params: { project: Project }): Promise<void> {
     const { project } = params;
-    return this.sendProjectRelatedNotification({
+
+    await this.sendProjectRelatedNotification({
       project,
       eventName: NOTIFICATIONS_EVENT_NAMES.PROJECT_LISTED,
     });
@@ -146,14 +272,19 @@ export class NotificationCenterAdapter implements NotificationAdapterInterface {
     project: Project;
     eventName: NOTIFICATIONS_EVENT_NAMES;
     metadata?: any;
+    user?: {
+      walletAddress: string;
+      email?: string;
+    };
   }): Promise<void> {
-    const { project, eventName, metadata } = params;
+    const { project, eventName, metadata, user } = params;
+    const receivedUser = user || (project.adminUser as User);
     return this.callSendNotification({
       eventName,
-      email: project.adminUser?.email,
+      email: receivedUser.email,
       // currently Segment handle sending emails, so notification-center doesnt need to send that
       sendEmail: false,
-      userWalletAddress: String(project.adminUser?.walletAddress),
+      userWalletAddress: receivedUser.walletAddress as string,
       projectId: String(project.id),
       metadata: {
         projectTitle: project.title,
diff --git a/src/analytics/analytics.ts b/src/analytics/analytics.ts
index d53396bc5..161547239 100644
--- a/src/analytics/analytics.ts
+++ b/src/analytics/analytics.ts
@@ -6,6 +6,8 @@ export enum NOTIFICATIONS_EVENT_NAMES {
   DRAFTED_PROJECT_ACTIVATED = 'Draft published',
   PROJECT_LISTED = 'Project listed',
   PROJECT_UNLISTED = 'Project unlisted',
+  PROJECT_UNLISTED_DONORS = 'Project unlisted - Donors',
+  PROJECT_UNLISTED_USERS_WHO_LIKED = 'Project unlisted - Users Who Liked',
   PROJECT_EDITED = 'Project edited',
   PROJECT_BADGE_REVOKED = 'Project badge revoked',
   PROJECT_BADGE_REVOKE_REMINDER = 'Project badge revoke reminder',
@@ -20,14 +22,19 @@ export enum NOTIFICATIONS_EVENT_NAMES {
   PROJECT_UNVERIFIED = 'Project unverified',
   PROJECT_ACTIVATED = 'Project activated',
   PROJECT_DEACTIVATED = 'Project deactivated',
+  PROJECT_DEACTIVATED_DONORS = 'Project deactivated - Donors',
+  PROJECT_DEACTIVATED_USERS_WHO_LIKED = 'Project deactivated - Users Who Liked',
+
   PROJECT_CANCELLED = 'Project cancelled',
+  PROJECT_CANCELLED_DONORS = 'Project cancelled - Donors',
+  PROJECT_CANCELLED_USERS_WHO_LIKED = 'Project cancelled - Users Who Liked',
   SEND_EMAIL_CONFIRMATION = 'Send email confirmation',
   MADE_DONATION = 'Made donation',
   DONATION_RECEIVED = 'Donation received',
   PROJECT_RECEIVED_HEART = 'project liked',
   PROJECT_UPDATED_DONOR = 'Project updated - donor',
   PROJECT_UPDATED_OWNER = 'Project updated - owner',
-  PROJECT_CREATED = 'Project created',
+  PROJECT_CREATED = 'The project saved as draft',
   UPDATED_PROFILE = 'Updated profile',
   GET_DONATION_PRICE_FAILED = 'Get Donation Price Failed',
   VERIFICATION_FORM_GOT_DRAFT_BY_ADMIN = 'Verification form got draft by admin',
diff --git a/src/entities/reaction.ts b/src/entities/reaction.ts
index 348faa9d8..203244ba7 100644
--- a/src/entities/reaction.ts
+++ b/src/entities/reaction.ts
@@ -10,6 +10,7 @@ import {
   Index,
 } from 'typeorm';
 import { Project, ProjectUpdate } from './project';
+import { User } from './user';
 
 @Entity()
 @ObjectType()
@@ -29,8 +30,12 @@ export class Reaction extends BaseEntity {
   @Column({ nullable: true })
   projectUpdateId: number;
 
+  @Field(type => User, { nullable: true })
+  @ManyToOne(type => User, { nullable: true })
+  user: User;
   @Field(type => ID)
   @Column()
+  @RelationId((reaction: Reaction) => reaction.user)
   userId: number;
 
   @Field(type => String)
diff --git a/src/repositories/donationRepository.test.ts b/src/repositories/donationRepository.test.ts
index 6b910c975..f0a377e1f 100644
--- a/src/repositories/donationRepository.test.ts
+++ b/src/repositories/donationRepository.test.ts
@@ -5,6 +5,7 @@ import {
   generateRandomTxHash,
   saveDonationDirectlyToDb,
   saveProjectDirectlyToDb,
+  saveUserDirectlyToDb,
   SEED_DATA,
 } from '../../test/testUtils';
 import { User, UserRole } from '../entities/user';
@@ -13,6 +14,7 @@ import {
   createDonation,
   findDonationById,
   findDonationsByTransactionId,
+  findUsersWhoDonatedToProject,
 } from './donationRepository';
 
 describe('createDonation test cases', () => {
@@ -55,6 +57,10 @@ describe(
   findDonationsByTransactionIdTestCases,
 );
 describe('findDonationById() test cases', findDonationByIdTestCases);
+describe(
+  'findUsersWhoDonatedToProject() test cases',
+  findUsersWhoDonatedToProjectTestCases,
+);
 
 function findDonationsByTransactionIdTestCases() {
   it('should return donation with txHash ', async () => {
@@ -119,3 +125,50 @@ function findDonationByIdTestCases() {
     assert.isNotOk(fetchedDonation);
   });
 }
+
+function findUsersWhoDonatedToProjectTestCases() {
+  it('should find wallet addresses of who donated to a project', async () => {
+    const project = await saveProjectDirectlyToDb(createProjectData());
+    const donor1 = await saveUserDirectlyToDb(generateRandomEtheriumAddress());
+    const donor2 = await saveUserDirectlyToDb(generateRandomEtheriumAddress());
+    const donor3 = await saveUserDirectlyToDb(generateRandomEtheriumAddress());
+    await saveDonationDirectlyToDb(createDonationData(), donor1.id, project.id);
+    await saveDonationDirectlyToDb(createDonationData(), donor2.id, project.id);
+    await saveDonationDirectlyToDb(createDonationData(), donor3.id, project.id);
+    const users = await findUsersWhoDonatedToProject(project.id);
+    assert.equal(users.length, 3);
+    assert.isOk(
+      users.find(user => user.walletAddress === donor1.walletAddress),
+    );
+    assert.isOk(
+      users.find(user => user.walletAddress === donor2.walletAddress),
+    );
+    assert.isOk(
+      users.find(user => user.walletAddress === donor3.walletAddress),
+    );
+  });
+  it('should find wallet addresses of who donated to a project, not include repetitive items', async () => {
+    const project = await saveProjectDirectlyToDb(createProjectData());
+    const donor1 = await saveUserDirectlyToDb(generateRandomEtheriumAddress());
+    const donor2 = await saveUserDirectlyToDb(generateRandomEtheriumAddress());
+    const donor3 = await saveUserDirectlyToDb(generateRandomEtheriumAddress());
+    await saveDonationDirectlyToDb(createDonationData(), donor1.id, project.id);
+    await saveDonationDirectlyToDb(createDonationData(), donor1.id, project.id);
+    await saveDonationDirectlyToDb(createDonationData(), donor1.id, project.id);
+    await saveDonationDirectlyToDb(createDonationData(), donor2.id, project.id);
+    await saveDonationDirectlyToDb(createDonationData(), donor2.id, project.id);
+    await saveDonationDirectlyToDb(createDonationData(), donor3.id, project.id);
+    await saveDonationDirectlyToDb(createDonationData(), donor3.id, project.id);
+    const users = await findUsersWhoDonatedToProject(project.id);
+    assert.equal(users.length, 3);
+    assert.isOk(
+      users.find(user => user.walletAddress === donor1.walletAddress),
+    );
+    assert.isOk(
+      users.find(user => user.walletAddress === donor2.walletAddress),
+    );
+    assert.isOk(
+      users.find(user => user.walletAddress === donor3.walletAddress),
+    );
+  });
+}
diff --git a/src/repositories/donationRepository.ts b/src/repositories/donationRepository.ts
index 1cf81408f..935fedb3e 100644
--- a/src/repositories/donationRepository.ts
+++ b/src/repositories/donationRepository.ts
@@ -72,3 +72,23 @@ export const findDonationById = async (
     .leftJoinAndSelect('donation.project', 'project')
     .getOne();
 };
+
+export const findUsersWhoDonatedToProject = async (
+  projectId: number,
+): Promise<{ walletAddress: string; email?: string }[]> => {
+  const donations = await Donation.createQueryBuilder('donation')
+    .leftJoin('donation.user', 'user')
+    .addSelect(['user.walletAddress', 'user.email'])
+    .distinctOn(['user.walletAddress'])
+    .where(`"projectId"=:projectId`, {
+      projectId,
+    })
+    .getMany();
+
+  return donations.map(donation => {
+    return {
+      walletAddress: donation.user.walletAddress?.toLowerCase() as string,
+      email: donation.user.email,
+    };
+  });
+};
diff --git a/src/repositories/reactionRepository.test.ts b/src/repositories/reactionRepository.test.ts
new file mode 100644
index 000000000..16914c4ad
--- /dev/null
+++ b/src/repositories/reactionRepository.test.ts
@@ -0,0 +1,56 @@
+import {
+  createProjectData,
+  generateRandomEtheriumAddress,
+  saveProjectDirectlyToDb,
+  saveUserDirectlyToDb,
+} from '../../test/testUtils';
+import { assert } from 'chai';
+import { findUsersWhoLikedProject } from './reactionRepository';
+import { Reaction } from '../entities/reaction';
+
+describe(
+  'findUsersWhoLikedProject() test cases',
+  findUsersWhoLikedProjectTestCases,
+);
+
+function findUsersWhoLikedProjectTestCases() {
+  it('should find wallet addresses of who liked to a project', async () => {
+    const project = await saveProjectDirectlyToDb(createProjectData());
+    const firstUser1 = await saveUserDirectlyToDb(
+      generateRandomEtheriumAddress(),
+    );
+    const firstUser2 = await saveUserDirectlyToDb(
+      generateRandomEtheriumAddress(),
+    );
+    const firstUser3 = await saveUserDirectlyToDb(
+      generateRandomEtheriumAddress(),
+    );
+    await Reaction.create({
+      project,
+      user: firstUser1,
+      reaction: 'heart',
+    }).save();
+    await Reaction.create({
+      project,
+      user: firstUser2,
+      reaction: 'heart',
+    }).save();
+    await Reaction.create({
+      project,
+      user: firstUser3,
+      reaction: 'heart',
+    }).save();
+
+    const users = await findUsersWhoLikedProject(project.id);
+    assert.equal(users.length, 3);
+    assert.isOk(
+      users.find(user => user.walletAddress === firstUser1.walletAddress),
+    );
+    assert.isOk(
+      users.find(user => user.walletAddress === firstUser2.walletAddress),
+    );
+    assert.isOk(
+      users.find(user => user.walletAddress === firstUser3.walletAddress),
+    );
+  });
+}
diff --git a/src/repositories/reactionRepository.ts b/src/repositories/reactionRepository.ts
new file mode 100644
index 000000000..e2ab00663
--- /dev/null
+++ b/src/repositories/reactionRepository.ts
@@ -0,0 +1,20 @@
+import { Reaction } from '../entities/reaction';
+
+export const findUsersWhoLikedProject = async (
+  projectId: number,
+): Promise<{ walletAddress: string; email?: string }[]> => {
+  const reactions = await Reaction.createQueryBuilder('reaction')
+    .leftJoin('reaction.user', 'user')
+    .addSelect(['user.walletAddress'])
+    .where(`"projectId"=:projectId`, {
+      projectId,
+    })
+    .getMany();
+
+  return reactions.map(reaction => {
+    return {
+      walletAddress: reaction.user.walletAddress?.toLowerCase() as string,
+      email: reaction.user.email,
+    };
+  });
+};
diff --git a/src/services/powerBoostingService.ts b/src/services/powerBoostingService.ts
deleted file mode 100644
index e69de29bb..000000000