diff --git a/app/mailers/activity_pub/actor_flagged_mailer.rb b/app/mailers/activity_pub/actor_flagged_mailer.rb
new file mode 100644
index 00000000..ccf24568
--- /dev/null
+++ b/app/mailers/activity_pub/actor_flagged_mailer.rb
@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+class ActivityPub
+  # Notifica a les moderadores cuando un sitio fue reportado.
+  class ActorFlaggedMailer < ::ApplicationMailer
+    # Envía correo a cada moderadore en su idioma
+    #
+    # @param :site_id [String,Integer]
+    # @param :site_name [String]
+    # @param :content [String]
+    def notify_moderators
+      Usuarie.moderators.pluck(:lang, :email).group_by(&:first).transform_values do |value|
+        value.last
+      end.each_pair do |lang, emails|
+        I18n.with_locale(lang) do
+          emails.each do |email|
+            mail to: email, subject: I18n.t('activity_pub.actor_flagged_mailer.notify_moderators.subject')
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/app/models/activity_pub/activity/flag.rb b/app/models/activity_pub/activity/flag.rb
index ffbc374b..f54b1d27 100644
--- a/app/models/activity_pub/activity/flag.rb
+++ b/app/models/activity_pub/activity/flag.rb
@@ -2,6 +2,16 @@
 
 class ActivityPub
   class Activity
-    class Flag < ActivityPub::Activity; end
+    class Flag < ActivityPub::Activity
+      # Notifica a todes les moderadores
+      def update_activity_pub_state!
+        ActivityPub::ActorFlaggedMailer.with(
+          content: content['content'],
+          object: content['object'],
+          actor: content['actor'],
+          site_id: activity_pub.site_id
+        ).notify_moderators.deliver_later
+      end
+    end
   end
 end
diff --git a/app/models/concerns/activity_pub/moderator_concern.rb b/app/models/concerns/activity_pub/moderator_concern.rb
new file mode 100644
index 00000000..ed0cf245
--- /dev/null
+++ b/app/models/concerns/activity_pub/moderator_concern.rb
@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+class ActivityPub
+  module ModeratorConcern
+    extend ActiveSupport::Concern
+
+    included do
+      scope :moderators, ->() { where(moderator: true) }
+    end
+  end
+end
diff --git a/app/models/usuarie.rb b/app/models/usuarie.rb
index 4856f17f..b9a5bf94 100644
--- a/app/models/usuarie.rb
+++ b/app/models/usuarie.rb
@@ -3,6 +3,7 @@
 # Usuarie de la plataforma
 class Usuarie < ApplicationRecord
   include Usuarie::Consent
+  include ActivityPub::ModeratorConcern
 
   devise :invitable, :database_authenticatable,
          :recoverable, :rememberable, :validatable,
diff --git a/app/views/activity_pub/actor_flagged_mailer/notify_moderators.text.haml b/app/views/activity_pub/actor_flagged_mailer/notify_moderators.text.haml
new file mode 100644
index 00000000..afe984f7
--- /dev/null
+++ b/app/views/activity_pub/actor_flagged_mailer/notify_moderators.text.haml
@@ -0,0 +1,18 @@
+= t('.content', site_id: params[:site_id])
+
+= Terminal::Table.new do |table|
+  - if (actor = params[:actor].presence).present?
+    - table << [ t('.actor') ]
+    - table.add_separator
+    - table << [ actor ]
+    - table.add_separator
+
+  - if (content = sanitize(params[:content])).present?
+    - table << [ word_wrap(content, line_width: 50) ]
+    - table.add_separator
+
+  - if (uris = [params[:object]].flatten).present?
+    - table << [ t('.uris') ]
+    - table.add_separator
+    - uris.each do |uri|
+      - table << [ uri ]
diff --git a/config/locales/en.yml b/config/locales/en.yml
index b717c666..2b0f7946 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -120,6 +120,13 @@ en:
       confirm_report: "Send report to the remote instance? This action will also block the account."
   remote_flags:
     report_message: "Hi! Someone using Sutty CMS reported this account on your instance. We don't have support for customized report messages yet, but we will soon. You can reach us at %{panel_actor_mention}."
+  activity_pub:
+    actor_flagged_mailer:
+      notify_moderators:
+        subject: "A site has been reported"
+        content: "The site with id %{site_id} has been reported.  Please review the report ASAP."
+        actor: "Site"
+        uris: "Reported activities"
   activity_pubs:
     action_on_several:
       success: "Several comments have changed moderation state. You can find them using the filters on the Comments section."
diff --git a/config/locales/es.yml b/config/locales/es.yml
index e41c8a41..da9facb6 100644
--- a/config/locales/es.yml
+++ b/config/locales/es.yml
@@ -119,6 +119,13 @@ es:
       confirm_report: "¿Enviar el reporte a la instancia remota? Esta acción también bloqueará la cuenta."
   remote_flags:
     report_message: "¡Hola! Une usuarie de Sutty CMS reportó esta cuenta en tu instancia. Todavía no tenemos soporte para mensajes personalizados. Podés contactarnos en %{panel_actor_mention}."
+  activity_pub:
+    actor_flagged_mailer:
+      notify_moderators:
+        subject: "Un sitio ha sido reportado"
+        content: "El sitio con id %{site_id} ha sido reportado.  Por favor revisa el reporte a la brevedad."
+        actor: "Sitio"
+        uris: "Actividades reportadas"
   activity_pubs:
     action_on_several:
       success: "Se ha modificado el estado de moderación de varios comentarios. Podés encontrarlos usando los filtros en la sección Comentarios."
diff --git a/db/migrate/20241113183226_add_moderator_to_usuaries.rb b/db/migrate/20241113183226_add_moderator_to_usuaries.rb
new file mode 100644
index 00000000..073e3c70
--- /dev/null
+++ b/db/migrate/20241113183226_add_moderator_to_usuaries.rb
@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+# Agrega el campo moderator para saber quiénes son moderadores
+class AddModeratorToUsuaries < ActiveRecord::Migration[6.1]
+  def change
+    add_column :usuaries, :moderator, :boolean, default: false
+  end
+end
diff --git a/db/structure.sql b/db/structure.sql
index fa1caf34..032425f1 100644
--- a/db/structure.sql
+++ b/db/structure.sql
@@ -1497,7 +1497,8 @@ CREATE TABLE public.usuaries (
     privacy_policy_accepted_at timestamp without time zone,
     terms_of_service_accepted_at timestamp without time zone,
     code_of_conduct_accepted_at timestamp without time zone,
-    available_for_feedback_accepted_at timestamp without time zone
+    available_for_feedback_accepted_at timestamp without time zone,
+    moderator boolean DEFAULT false
 );
 
 
@@ -2734,6 +2735,7 @@ INSERT INTO "schema_migrations" (version) VALUES
 ('20240318183846'),
 ('20240319124212'),
 ('20240319144735'),
-('20240614191548');
+('20240614191548'),
+('20241113183226');