diff --git a/app/controllers/new_user/dossiers_controller.rb b/app/controllers/new_user/dossiers_controller.rb
index 56bf50f4a..d2daad675 100644
--- a/app/controllers/new_user/dossiers_controller.rb
+++ b/app/controllers/new_user/dossiers_controller.rb
@@ -99,10 +99,12 @@ module NewUser
     end
 
     def ask_deletion
-      @dossier = current_user.dossiers.find(params[:id])
-      DossierMailer.ask_deletion(@dossier).deliver_later
-      flash.notice = 'Une demande de suppression de votre dossier a été envoyée, elle sera traitée dans les plus brefs délais.'
-      redirect_to users_dossier_recapitulatif_path(@dossier)
+      dossier = current_user.dossiers.includes(:user, procedure: :administrateur).find(params[:id])
+      deleted_dossier = dossier.delete_and_keep_track
+      DossierMailer.notify_deletion_to_user(deleted_dossier, dossier.user.email).deliver_later
+      DossierMailer.notify_deletion_to_administration(deleted_dossier, dossier.procedure.administrateur.email).deliver_later
+      flash.notice = 'Votre dossier a bien été supprimé.'
+      redirect_to users_dossiers_path
     end
 
     private
diff --git a/app/mailers/dossier_mailer.rb b/app/mailers/dossier_mailer.rb
index 68ef28d7c..1d8643314 100644
--- a/app/mailers/dossier_mailer.rb
+++ b/app/mailers/dossier_mailer.rb
@@ -1,8 +1,13 @@
 class DossierMailer < ApplicationMailer
   layout 'mailers/layout'
 
-  def ask_deletion(dossier)
-    @dossier = dossier
-    mail(to: "contact@demarches-simplifiees.fr", subject: "Demande de suppression de dossier")
+  def notify_deletion_to_user(deleted_dossier, to_email)
+    @deleted_dossier = deleted_dossier
+    mail(to: to_email, subject: "Votre dossier n° #{@deleted_dossier.dossier_id} a bien été supprimé")
+  end
+
+  def notify_deletion_to_administration(deleted_dossier, to_email)
+    @deleted_dossier = deleted_dossier
+    mail(to: to_email, subject: "Le dossier n° #{@deleted_dossier.dossier_id} a été supprimé à la demande de l'usager")
   end
 end
diff --git a/app/models/dossier.rb b/app/models/dossier.rb
index 8fbe99ee4..9452cc0eb 100644
--- a/app/models/dossier.rb
+++ b/app/models/dossier.rb
@@ -272,6 +272,13 @@ class Dossier < ApplicationRecord
     end
   end
 
+  def delete_and_keep_track
+    now = Time.now
+    deleted_dossier = DeletedDossier.create!(dossier_id: id, procedure: procedure, state: state, deleted_at: now)
+    update(hidden_at: now)
+    deleted_dossier
+  end
+
   private
 
   def update_state_dates
diff --git a/app/views/dossier_mailer/ask_deletion.html.haml b/app/views/dossier_mailer/ask_deletion.html.haml
deleted file mode 100644
index 6b1717e2d..000000000
--- a/app/views/dossier_mailer/ask_deletion.html.haml
+++ /dev/null
@@ -1,10 +0,0 @@
-- content_for(:title, 'Demande de suppression de dossier')
-
-%h1 Bonjour
-
-%p
-  Une demande de suppression a été effectuée pour le dossier #{@dossier.id}
-  (état : #{@dossier.state})
-  par l'utilisateur #{@dossier.user.email}.
-%p
-  Merci de le notifier quand cela est fait.
diff --git a/app/views/dossier_mailer/notify_deletion_to_administration.html.haml b/app/views/dossier_mailer/notify_deletion_to_administration.html.haml
new file mode 100644
index 000000000..dc2705328
--- /dev/null
+++ b/app/views/dossier_mailer/notify_deletion_to_administration.html.haml
@@ -0,0 +1,11 @@
+- content_for(:title, "Suppression du dossier n° #{@deleted_dossier.dossier_id}")
+
+%h1 Bonjour,
+
+%p
+  À la demande de l'usager le dossier n° #{@deleted_dossier.dossier_id} a été supprimé.
+%br
+Bonne journée,
+%br
+%br
+L'équipe demarches-simplifiees.fr
diff --git a/app/views/dossier_mailer/notify_deletion_to_user.html.haml b/app/views/dossier_mailer/notify_deletion_to_user.html.haml
new file mode 100644
index 000000000..12845ce61
--- /dev/null
+++ b/app/views/dossier_mailer/notify_deletion_to_user.html.haml
@@ -0,0 +1,12 @@
+- content_for(:title, "Suppression du dossier n° #{@deleted_dossier.dossier_id}")
+
+%h1 Bonjour,
+
+%p
+  Votre dossier n° #{@deleted_dossier.dossier_id} a bien été supprimé.
+  Une trace anonyme de ce traitement sera conservée pour l’administration.
+%br
+Bonne journée,
+%br
+%br
+L'équipe demarches-simplifiees.fr
diff --git a/spec/controllers/new_user/dossiers_controller_spec.rb b/spec/controllers/new_user/dossiers_controller_spec.rb
index 2717a6883..8d65338dc 100644
--- a/spec/controllers/new_user/dossiers_controller_spec.rb
+++ b/spec/controllers/new_user/dossiers_controller_spec.rb
@@ -394,11 +394,20 @@ describe NewUser::DossiersController, type: :controller do
       let(:dossier) { create(:dossier, user: user, autorisation_donnees: true) }
 
       it do
-        expect(DossierMailer).to receive(:ask_deletion).and_return(double(deliver_later: nil))
+        expect(DossierMailer).to receive(:notify_deletion_to_administration).with(kind_of(DeletedDossier), dossier.procedure.administrateur.email).and_return(double(deliver_later: nil))
+        expect(DossierMailer).to receive(:notify_deletion_to_user).with(kind_of(DeletedDossier), dossier.user.email).and_return(double(deliver_later: nil))
         subject
       end
 
-      it { is_expected.to redirect_to(users_dossier_recapitulatif_path(dossier)) }
+      it do
+        procedure = dossier.procedure
+        dossier_id = dossier.id
+        subject
+        expect(Dossier.find_by(id: dossier_id)).to eq(nil)
+        expect(procedure.deleted_dossiers.count).to eq(1)
+        expect(procedure.deleted_dossiers.first.dossier_id).to eq(dossier_id)
+      end
+      it { is_expected.to redirect_to(users_dossiers_path) }
     end
 
     context 'when dossier is not owned by signed in user' do
@@ -406,10 +415,17 @@ describe NewUser::DossiersController, type: :controller do
       let(:dossier) { create(:dossier, user: user2, autorisation_donnees: true) }
 
       it do
-        expect(DossierMailer).not_to receive(:ask_deletion)
+        expect(DossierMailer).not_to receive(:notify_deletion_to_administration)
+        expect(DossierMailer).not_to receive(:notify_deletion_to_user)
         subject
       end
 
+      it do
+        subject
+        expect(Dossier.find_by(id: dossier.id)).not_to eq(nil)
+        expect(dossier.procedure.deleted_dossiers.count).to eq(0)
+      end
+
       it { is_expected.to redirect_to(root_path) }
     end
   end
diff --git a/spec/mailers/previews/dossier_mailer_preview.rb b/spec/mailers/previews/dossier_mailer_preview.rb
index bb625c37e..c74b23ae2 100644
--- a/spec/mailers/previews/dossier_mailer_preview.rb
+++ b/spec/mailers/previews/dossier_mailer_preview.rb
@@ -1,6 +1,10 @@
 # Preview all emails at http://localhost:3000/rails/mailers/dossier_mailer
 class DossierMailerPreview < ActionMailer::Preview
-  def ask_deletion
-    DossierMailer.ask_deletion(Dossier.last)
+  def notify_deletion_to_user
+    DossierMailer.notify_deletion_to_user(DeletedDossier.last, "user@ds.fr")
+  end
+
+  def notify_deletion_to_administration
+    DossierMailer.notify_deletion_to_administration(DeletedDossier.last, "admin@ds.fr")
   end
 end