diff --git a/app/controllers/activity_pubs_controller.rb b/app/controllers/activity_pubs_controller.rb
index c8f86ef0..1efe2b89 100644
--- a/app/controllers/activity_pubs_controller.rb
+++ b/app/controllers/activity_pubs_controller.rb
@@ -11,6 +11,12 @@ class ActivityPubsController < ApplicationController
       activity_pub.update(remote_flag_params(activity_pub)) if event == :report
       activity_pub.public_send(:"#{event}!") if activity_pub.public_send(:"may_#{event}?")
 
+      flash[:success] = I18n.t("activity_pubs.#{event}.success")
+    rescue Exception => e
+      ExceptionNotifier.notify_exception(e, data: { site: site.name, params: params.permit!.to_h })
+
+      flash[:error] = I18n.t("activity_pubs.#{event}.error")
+    ensure
       redirect_to_moderation_queue!
     end
   end
@@ -49,6 +55,15 @@ class ActivityPubsController < ApplicationController
         next unless activity_pub.public_send(may)
 
         activity_pub.public_send(method)
+
+        flash[:success] = I18n.t('activity_pubs.action_on_several.success')
+      rescue Exception => e
+        ExceptionNotifier.notify_exception(e,
+                                           data: { site: site.name, params: params.permit!.to_h,
+                                                   activity_pub: activity_pub.id })
+
+        flash.delete(:success)
+        flash[:error] = I18n.t('activity_pubs.action_on_several.error')
       end
     end
   end
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 2ae8484b..23df9e3c 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -117,6 +117,19 @@ en:
       text_report: Report
   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_pubs:
+    action_on_several:
+      success: "Several comments have changed moderation state. You can find them using the filters on the Comments section."
+      error: "There was an error while changing moderation state. We received a report and will be acting on it soon."
+    approve:
+      success: "Comment approved."
+      error: "There was an error while approving the comment. We received a report and will be acting on it soon."
+    reject:
+      success: "Comment rejected. You can report it using the Report button."
+      error: "There was an error while rejecting the comment. We received a report and will be acting on it soon."
+    report:
+      success: "Comment reported."
+      error: "There was an error while reporting the comment. We received a report and will be acting on it soon."
   actor_moderations:
     action_on_several:
       success: "Several accounts have changed moderation state. You can find them using the filters on the Accounts section."
diff --git a/config/locales/es.yml b/config/locales/es.yml
index 29815a61..1773a0c6 100644
--- a/config/locales/es.yml
+++ b/config/locales/es.yml
@@ -116,6 +116,19 @@ es:
       text_report: Reportar
   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_pubs:
+    action_on_several:
+      success: "Se ha modificado el estado de moderación de varios comentarios. Podés encontrarlos usando los filtros en la sección Comentarios."
+      error: "Hubo un error al modificar el estado de moderación de varios comentarios. Hemos recibido el reporte y lo estaremos verificando."
+    approve:
+      success: "Comentario aprobado."
+      error: "No se puedo aprobar el comentario. Hemos recibido el reporte y lo estaremos verificando."
+    reject:
+      success: "Comentario rechazado. Podés reportarlo usando el botón Reportar."
+      error: "No se puedo rechazar el comentario. Hemos recibido el reporte y lo estaremos verificando."
+    report:
+      success: "Comentario reportado."
+      error: "No se puedo reportar el comentario. Hemos recibido el reporte y lo estaremos verificando."
   actor_moderations:
     action_on_several:
       success: "Se han modificado el estado de moderación de varias cuentas. Podés encontrarlas usando los filtros en la sección Cuentas."