diff --git a/Gemfile b/Gemfile
index e90ed1171..512c38b36 100644
--- a/Gemfile
+++ b/Gemfile
@@ -56,6 +56,7 @@ gem 'jbuilder' # JSON structures via a Builder-style DSL
 gem 'logging', '~> 2.0.0'
 gem 'nested_form_fields'
 gem 'nokogiri', '~> 1.14.3' # HTML/XML parser
+gem 'noticed'
 gem 'rails_autolink', '~> 1.1', '>= 1.1.6'
 gem 'rgl' # Graph framework for project diagram calculations
 gem 'roo', '~> 2.10.0' # Spreadsheet parser
diff --git a/Gemfile.lock b/Gemfile.lock
index 983c917d8..7d3d534ae 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -298,6 +298,8 @@ GEM
     discard (1.2.1)
       activerecord (>= 4.2, < 8)
     docile (1.4.0)
+    domain_name (0.5.20190701)
+      unf (>= 0.0.5, < 1.0.0)
     doorkeeper (5.6.6)
       railties (>= 5)
     down (5.4.1)
@@ -321,6 +323,9 @@ GEM
     faraday-net_http (3.0.2)
     fastimage (2.2.7)
     ffi (1.15.5)
+    ffi-compiler (1.0.1)
+      ffi (>= 1.0.0)
+      rake
     figaro (1.2.0)
       thor (>= 0.14.0, < 2)
     fugit (1.8.1)
@@ -332,6 +337,14 @@ GEM
       process-pipeline
     hashdiff (1.0.1)
     hashie (5.0.0)
+    http (5.1.1)
+      addressable (~> 2.8)
+      http-cookie (~> 1.0)
+      http-form_data (~> 2.2)
+      llhttp-ffi (~> 0.4.0)
+    http-cookie (1.0.5)
+      domain_name (~> 0.5)
+    http-form_data (2.3.0)
     httparty (0.21.0)
       mini_mime (>= 1.0.0)
       multi_xml (>= 0.5.2)
@@ -381,6 +394,9 @@ GEM
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     little-plugger (1.1.4)
+    llhttp-ffi (0.4.0)
+      ffi-compiler (~> 1.0)
+      rake (~> 13.0)
     logging (2.0.0)
       little-plugger (~> 1.1)
       multi_json (~> 1.10)
@@ -428,6 +444,9 @@ GEM
       racc (~> 1.4)
     nokogiri (1.14.5-x86_64-linux)
       racc (~> 1.4)
+    noticed (1.6.3)
+      http (>= 4.0.0)
+      rails (>= 5.2.0)
     oauth2 (2.0.9)
       faraday (>= 0.17.3, < 3.0)
       jwt (>= 1.0, < 3.0)
@@ -654,6 +673,9 @@ GEM
     uglifier (4.2.0)
       execjs (>= 0.3.0, < 3)
     underscore-rails (1.8.3)
+    unf (0.1.4)
+      unf_ext
+    unf_ext (0.0.8.2)
     unicode-display_width (2.4.2)
     uniform_notifier (1.16.0)
     version_gem (1.1.3)
@@ -740,6 +762,7 @@ DEPENDENCIES
   nested_form_fields
   newrelic_rpm
   nokogiri (~> 1.14.3)
+  noticed
   omniauth (~> 2.1)
   omniauth-azure-activedirectory-v2
   omniauth-linkedin-oauth2
diff --git a/app/controllers/user_notifications_controller.rb b/app/controllers/user_notifications_controller.rb
index 214ccc033..eb2c7e976 100644
--- a/app/controllers/user_notifications_controller.rb
+++ b/app/controllers/user_notifications_controller.rb
@@ -10,14 +10,12 @@ class UserNotificationsController < ApplicationController
       next_page: notifications.next_page
     }
 
-    UserNotification.where(
-      notification_id: notifications.except(:select).where.not(type_of: 2).select(:id)
-    ).seen_by_user(current_user)
+    notifications.mark_as_read!
   end
 
   def unseen_counter
     render json: {
-      unseen: load_notifications.where('user_notifications.checked = ?', false).size
+      unseen: load_notifications.where(read_at: nil).size
     }
   end
 
@@ -25,7 +23,6 @@ class UserNotificationsController < ApplicationController
 
   def load_notifications
     current_user.notifications
-                .select(:id, :type_of, :title, :message, :created_at, 'user_notifications.checked')
                 .order(created_at: :desc)
   end
 
@@ -33,12 +30,12 @@ class UserNotificationsController < ApplicationController
     notifications.map do |notification|
       {
         id: notification.id,
-        type_of: notification.type_of,
-        title: notification.title,
-        message: notification.message,
+        type_of: notification.type,
+        title: notification.to_notification.title,
+        message: notification.to_notification.message,
         created_at: I18n.l(notification.created_at, format: :full),
         today: notification.created_at.today?,
-        checked: notification.checked
+        checked: notification.read_at.present?
       }
     end
   end
diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index 1f5d3ae55..6fdc6a3a5 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -101,12 +101,10 @@ module ApplicationHelper
   end
 
   def generate_annotation_notification(target_user, title, message)
-    notification = Notification.create(
-      type_of: :assignment,
+    GeneralNotification.with(
       title: sanitize_input(title),
       message: sanitize_input(message)
-    )
-    UserNotification.create(notification: notification, user: target_user) if target_user.assignments_notification
+    ).deliver_later(target_user)
   end
 
   def custom_link_open_new_tab(text)
diff --git a/app/helpers/notifications_helper.rb b/app/helpers/notifications_helper.rb
index 5cce5d3e6..4635eb814 100644
--- a/app/helpers/notifications_helper.rb
+++ b/app/helpers/notifications_helper.rb
@@ -18,14 +18,9 @@ module NotificationsHelper
       message = "#{I18n.t('search.index.team')} #{team.name}"
     end
 
-    notification = Notification.create(
-      type_of: :assignment,
+    GeneralNotification.with(
       title: sanitize_input(title),
       message: sanitize_input(message)
-    )
-
-    if target_user.assignments_notification
-      notification.create_user_notification(target_user)
-    end
+    ).deliver_later(target_user)
   end
 end
diff --git a/app/jobs/concerns/failed_delivery_notifiable_job.rb b/app/jobs/concerns/failed_delivery_notifiable_job.rb
index ba5458f8b..e3b374333 100644
--- a/app/jobs/concerns/failed_delivery_notifiable_job.rb
+++ b/app/jobs/concerns/failed_delivery_notifiable_job.rb
@@ -23,12 +23,11 @@ module FailedDeliveryNotifiableJob
     @user = User.find_by(id: arguments.last[:user_id])
     return if @user.blank?
 
-    notification = Notification.create!(
-      type_of: :deliver_error,
+    DeliveryNotification.with(
       title: failed_notification_title,
-      message: failed_notification_message
-    )
-    notification.create_user_notification(@user)
+      message: failed_notification_message,
+      error: true
+    ).deliver_later(@user)
   end
 
   def failed_notification_title
diff --git a/app/jobs/protocols/docx_import_job.rb b/app/jobs/protocols/docx_import_job.rb
index 0bfb494c4..bfa967ef1 100644
--- a/app/jobs/protocols/docx_import_job.rb
+++ b/app/jobs/protocols/docx_import_job.rb
@@ -136,15 +136,13 @@ module Protocols
         "href='#{Rails.application.routes.url_helpers.rails_blob_path(@tmp_files.take.file)}'>" \
         "#{@tmp_files.take.file.filename}</a>"
 
-      notification = Notification.create!(
-        type_of: :deliver,
+      DeliveryNotification.with(
         title: I18n.t('protocols.import_export.import_protocol_notification.title', link: original_file_download_link),
-        message:  "#{I18n.t('protocols.import_export.import_protocol_notification.message')} " \
-                  "<a data-id='#{@protocol.id}'  data-turbolinks='false' " \
-                  "href='#{Rails.application.routes.url_helpers.protocol_path(@protocol)}'>" \
-                  "#{@protocol.name}</a>"
-      )
-      notification.create_user_notification(@user)
+        message: "#{I18n.t('protocols.import_export.import_protocol_notification.message')} " \
+                 "<a data-id='#{@protocol.id}'  data-turbolinks='false' " \
+                 "href='#{Rails.application.routes.url_helpers.protocol_path(@protocol)}'>" \
+                 "#{@protocol.name}</a>"
+      ).deliver_later(@user)
     end
 
     # Overrides method from FailedDeliveryNotifiableJob concern
diff --git a/app/jobs/reports/docx_job.rb b/app/jobs/reports/docx_job.rb
index 6f9cc6d92..ae1d5a743 100644
--- a/app/jobs/reports/docx_job.rb
+++ b/app/jobs/reports/docx_job.rb
@@ -21,16 +21,15 @@ module Reports
         report.docx_ready!
         report_path = Rails.application.routes.url_helpers
                            .reports_path(team: report.team.id, preview_report_id: report.id, preview_type: :docx)
-        notification = Notification.create(
-          type_of: :deliver,
+
+        DeliveryNotification.with(
           title: I18n.t('projects.reports.index.generation.completed_docx_notification_title'),
           message: I18n.t('projects.reports.index.generation.completed_notification_message',
                           report_link: "<a href='#{report_path}'>#{escape_input(report.name)}</a>",
                           team_name: escape_input(report.team.name))
-        )
+        ).deliver_later(user)
 
         Reports::DocxPreviewJob.perform_now(report.id)
-        notification.create_user_notification(user)
       ensure
         I18n.backend.date_format = nil
         file.close
diff --git a/app/jobs/reports/pdf_job.rb b/app/jobs/reports/pdf_job.rb
index 2bce30b56..e1b43527a 100644
--- a/app/jobs/reports/pdf_job.rb
+++ b/app/jobs/reports/pdf_job.rb
@@ -60,14 +60,13 @@ module Reports
 
         report_path = Rails.application.routes.url_helpers
                            .reports_path(team: report.team.id, preview_report_id: report.id, preview_type: :pdf)
-        notification = Notification.create(
-          type_of: :deliver,
+
+        DeliveryNotification.with(
           title: I18n.t('projects.reports.index.generation.completed_pdf_notification_title'),
           message: I18n.t('projects.reports.index.generation.completed_notification_message',
                           report_link: "<a href='#{report_path}'>#{escape_input(report.name)}</a>",
                           team_name: escape_input(report.team.name))
-        )
-        notification.create_user_notification(user)
+        ).deliver_later(user)
       ensure
         I18n.backend.date_format = nil
         file.close(true)
diff --git a/app/jobs/repositories_export_job.rb b/app/jobs/repositories_export_job.rb
index 911334621..4d93eeab6 100644
--- a/app/jobs/repositories_export_job.rb
+++ b/app/jobs/repositories_export_job.rb
@@ -83,18 +83,16 @@ class RepositoriesExportJob < ApplicationJob
   end
 
   def generate_notification
-    notification = Notification.create!(
-      type_of: :deliver,
+    DeliveryNotification.with(
       title: I18n.t('zip_export.notification_title'),
-      message:  "<a data-id='#{@zip_export.id}' " \
-                "data-turbolinks='false' " \
-                "href='#{Rails.application
-                              .routes
-                              .url_helpers
-                              .zip_exports_download_export_all_path(@zip_export)}'>" \
-                "#{@zip_export.zip_file_name}</a>"
-    )
-    notification.create_user_notification(@user)
+      message: "<a data-id='#{@zip_export.id}' " \
+                    "data-turbolinks='false' " \
+                    "href='#{Rails.application
+                                  .routes
+                                  .url_helpers
+                                  .zip_exports_download_export_all_path(@zip_export)}'>" \
+                    "#{@zip_export.zip_file_name}</a>"
+    ).deliver_later(@user)
   end
 
   # Overrides method from FailedDeliveryNotifiableJob concern
diff --git a/app/jobs/zip_export_job.rb b/app/jobs/zip_export_job.rb
index fbbb2e47c..8620a0fbd 100644
--- a/app/jobs/zip_export_job.rb
+++ b/app/jobs/zip_export_job.rb
@@ -34,17 +34,15 @@ class ZipExportJob < ApplicationJob
   end
 
   def generate_notification!
-    notification = Notification.create!(
-      type_of: :deliver,
+    DeliveryNotification.with(
       title: I18n.t('zip_export.notification_title'),
-      message:  "<a data-id='#{@zip_export.id}' " \
+      message: "<a data-id='#{@zip_export.id}' " \
                 "data-turbolinks='false' " \
                 "href='#{Rails.application
                               .routes
                               .url_helpers
                               .zip_exports_download_path(@zip_export)}'>" \
                 "#{@zip_export.zip_file_name}</a>"
-    )
-    notification.create_user_notification(@user)
+    ).deliver_later(@user)
   end
 end
diff --git a/app/models/concerns/generate_notification_model.rb b/app/models/concerns/generate_notification_model.rb
index deb443a06..ed8c1335b 100644
--- a/app/models/concerns/generate_notification_model.rb
+++ b/app/models/concerns/generate_notification_model.rb
@@ -14,15 +14,11 @@ module GenerateNotificationModel
     message = generate_activity_content(self, no_links: true, no_custom_links: true)
     description = generate_notification_description_elements(subject).reverse.join(' | ')
 
-    notification = Notification.create(
-      type_of: notification_type,
-      title: sanitize_input(message),
-      message: sanitize_input(description),
-      generator_user_id: owner.id
-    )
-
     notification_recipients.each do |user|
-      notification.create_user_notification(user)
+      ActivityNotification.with(
+        title: sanitize_input(message),
+        message: sanitize_input(description)
+      ).deliver_later(user)
     end
   end
 
diff --git a/app/models/notification.rb b/app/models/notification.rb
index dd6829ec2..d0a4f3919 100644
--- a/app/models/notification.rb
+++ b/app/models/notification.rb
@@ -5,16 +5,11 @@ class Notification < ApplicationRecord
   has_many :users, through: :user_notifications
   belongs_to :generator_user, class_name: 'User', optional: true
 
+  include Noticed::Model
+  belongs_to :recipient, polymorphic: true
+
   enum type_of: Extends::NOTIFICATIONS_TYPES
 
-  def create_user_notification(user)
-    return if user == generator_user
-    return unless can_send_to_user?(user)
-    return unless user.enabled_notifications_for?(type_of.to_sym, :web)
-
-    user_notifications.create!(user: user)
-  end
-
   private
 
   def can_send_to_user?(_user)
diff --git a/app/models/user.rb b/app/models/user.rb
index d659da492..0ee836291 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -307,8 +307,7 @@ class User < ApplicationRecord
            inverse_of: :created_by,
            dependent: :destroy
 
-  has_many :user_notifications, inverse_of: :user
-  has_many :notifications, through: :user_notifications
+  has_many :notifications, as: :recipient, dependent: :destroy, inverse_of: :recipient
   has_many :zip_exports, inverse_of: :user, dependent: :destroy
   has_many :view_states, dependent: :destroy
 
diff --git a/app/notifications/activity_notification.rb b/app/notifications/activity_notification.rb
new file mode 100644
index 000000000..1b6ec34e8
--- /dev/null
+++ b/app/notifications/activity_notification.rb
@@ -0,0 +1,38 @@
+# frozen_string_literal: true
+
+# To deliver this notification:
+#
+# ActivityNotification.with(post: @post).deliver_later(current_user)
+# ActivityNotification.with(post: @post).deliver(current_user)
+
+class ActivityNotification < Noticed::Base
+  # Add your delivery methods
+  #
+  deliver_by :database
+  # deliver_by :email, mailer: "UserMailer"
+  # deliver_by :slack
+  # deliver_by :custom, class: "MyDeliveryMethod"
+
+  # Add required params
+  #
+  # param :post
+
+  def message
+    # if params[:legacy]
+      params[:message]
+    #else
+    # new logic
+    # end
+  end
+
+  def title
+    # if params[:legacy]
+    params[:title]
+    # else
+    # new logic
+    # end
+  end
+  # def url
+  #   post_path(params[:post])
+  # end
+end
diff --git a/app/notifications/delivery_notification.rb b/app/notifications/delivery_notification.rb
new file mode 100644
index 000000000..a161df661
--- /dev/null
+++ b/app/notifications/delivery_notification.rb
@@ -0,0 +1,37 @@
+# frozen_string_literal: true
+
+# To deliver this notification:
+#
+# DeliveryNotification.with(post: @post).deliver_later(current_user)
+# DeliveryNotification.with(post: @post).deliver(current_user)
+
+class DeliveryNotification < Noticed::Base
+  # Add your delivery methods
+  #
+  deliver_by :database
+  # deliver_by :email, mailer: "UserMailer"
+  # deliver_by :slack
+  # deliver_by :custom, class: "MyDeliveryMethod"
+
+  # Add required params
+  #
+  # param :post
+
+  # Define helper methods to make rendering easier.
+  #
+  def message
+    # if params[:legacy]
+    params[:message]
+    # else
+    # new logic
+    # end
+  end
+
+  def title
+    # if params[:legacy]
+    params[:title]
+    # else
+    # new logic
+    # end
+  end
+end
diff --git a/app/notifications/general_notification.rb b/app/notifications/general_notification.rb
new file mode 100644
index 000000000..375224df1
--- /dev/null
+++ b/app/notifications/general_notification.rb
@@ -0,0 +1,41 @@
+# frozen_string_literal: true
+
+# To deliver this notification:
+#
+# GeneralNotification.with(post: @post).deliver_later(current_user)
+# GeneralNotification.with(post: @post).deliver(current_user)
+
+class GeneralNotification < Noticed::Base
+  # Add your delivery methods
+  #
+  deliver_by :database
+  # deliver_by :email, mailer: "UserMailer"
+  # deliver_by :slack
+  # deliver_by :custom, class: "MyDeliveryMethod"
+
+  # Add required params
+  #
+  # param :post
+
+  # Define helper methods to make rendering easier.
+  #
+  def message
+    # if params[:legacy]
+    params[:message]
+    # else
+    # new logic
+    # end
+  end
+
+  def title
+    # if params[:legacy]
+    params[:title]
+    # else
+    # new logic
+    # end
+  end
+  #
+  # def url
+  #   post_path(params[:post])
+  # end
+end
diff --git a/db/migrate/20231011103114_migrate_notification_to_noticed.rb b/db/migrate/20231011103114_migrate_notification_to_noticed.rb
new file mode 100644
index 000000000..e460ee6e6
--- /dev/null
+++ b/db/migrate/20231011103114_migrate_notification_to_noticed.rb
@@ -0,0 +1,48 @@
+# frozen_string_literal: true
+
+class MigrateNotificationToNoticed < ActiveRecord::Migration[7.0]
+  def up
+    add_column :notifications, :params, :jsonb, default: {}, null: false
+    add_column :notifications, :type, :string, null: false, default: 'LegacyNotification'
+    add_column :notifications, :read_at, :datetime
+    add_column :notifications, :recipient_id, :bigint
+    add_column :notifications, :recipient_type, :string
+
+    type_mapping = {
+      'assignment' => 'ActivityNotification',
+      'recent_changes' => 'GeneralNotification',
+      'deliver' => 'DeliveryNotification',
+      'deliver_error' => 'DeliveryNotification'
+    }
+
+    UserNotification.all.each do |user_notification|
+      notification = user_notification.notification.dup
+
+      new_type = type_mapping[notification.type_of]
+
+      params = {
+        title: notification.title,
+        message: notification.message,
+        legacy: true
+      }
+
+      params[:error] = notification.type_of == 'deliver_error' if new_type == 'DeliveryNotification'
+      notification.update(
+        params: params,
+        type: new_type,
+        read_at: (user_notification.updated_at if user_notification.checked),
+        recipient_id: user_notification.user_id,
+        recipient_type: 'User',
+        created_at: user_notification.created_at,
+        updated_at: user_notification.updated_at
+      )
+    end
+
+    Notification.where(type: 'LegacyNotification').destroy_all
+
+    remove_column :notifications, :type_of
+    remove_column :notifications, :title
+    remove_column :notifications, :message
+    remove_column :notifications, :generator_user_id
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index be3be339f..b0af8dfd6 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.0].define(version: 2023_09_04_080206) do
+ActiveRecord::Schema[7.0].define(version: 2023_10_11_103114) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "btree_gist"
   enable_extension "pg_trgm"
@@ -377,12 +377,13 @@ ActiveRecord::Schema[7.0].define(version: 2023_09_04_080206) do
   end
 
   create_table "notifications", force: :cascade do |t|
-    t.string "title"
-    t.string "message"
-    t.integer "type_of", null: false
-    t.bigint "generator_user_id"
     t.datetime "created_at", precision: nil, null: false
     t.datetime "updated_at", precision: nil, null: false
+    t.jsonb "params", default: {}, null: false
+    t.string "type", default: "LegacyNotification", null: false
+    t.datetime "read_at"
+    t.bigint "recipient_id"
+    t.string "recipient_type"
     t.index ["created_at"], name: "index_notifications_on_created_at"
   end
 
@@ -1347,7 +1348,6 @@ ActiveRecord::Schema[7.0].define(version: 2023_09_04_080206) do
   add_foreign_key "my_modules", "users", column: "created_by_id"
   add_foreign_key "my_modules", "users", column: "last_modified_by_id"
   add_foreign_key "my_modules", "users", column: "restored_by_id"
-  add_foreign_key "notifications", "users", column: "generator_user_id"
   add_foreign_key "oauth_access_grants", "oauth_applications", column: "application_id"
   add_foreign_key "oauth_access_grants", "users", column: "resource_owner_id"
   add_foreign_key "oauth_access_tokens", "oauth_applications", column: "application_id"