diff --git a/app/controllers/users/confirmations_controller.rb b/app/controllers/users/confirmations_controller.rb
deleted file mode 100644
index 1992ab9c1..000000000
--- a/app/controllers/users/confirmations_controller.rb
+++ /dev/null
@@ -1,38 +0,0 @@
-# frozen_string_literal: true
-
-class Users::ConfirmationsController < Devise::ConfirmationsController
-  # GET /resource/confirmation/new
-  # def new
-  #   super
-  # end
-
-  # POST /resource/confirmation
-  # def create
-  #   super
-  # end
-
-  # GET /resource/confirmation?confirmation_token=abcdef
-  # def show
-  #   super
-  # end
-
-  protected
-
-  # The path used after resending confirmation instructions.
-  # def after_resending_confirmation_instructions_path_for(resource_name)
-  #   super(resource_name)
-  # end
-
-  # The path used after confirmation.
-  def after_confirmation_path_for(resource_name, resource)
-    check_invite!(resource)
-
-    super(resource_name, resource)
-  end
-
-  private
-
-  def check_invite!(user)
-    Invite.where(email: user.email).update_all user_id: user.id
-  end
-end
diff --git a/app/controllers/users/dossiers/invites_controller.rb b/app/controllers/users/dossiers/invites_controller.rb
index 1d451a8ca..f4c4d9dc6 100644
--- a/app/controllers/users/dossiers/invites_controller.rb
+++ b/app/controllers/users/dossiers/invites_controller.rb
@@ -1,7 +1,10 @@
 class Users::Dossiers::InvitesController < UsersController
   def authenticate_user!
     session["user_return_to"] = request.fullpath
-    return redirect_to new_user_registration_path(user_email: params[:email]) if params[:email].present? && User.find_by(email: params[:email]).nil?
+
+    if params[:email].present? && User.find_by(email: params[:email]).nil?
+      return redirect_to new_user_registration_path(user: { email: params[:email] })
+    end
 
     super
   end
diff --git a/app/controllers/users/registrations_controller.rb b/app/controllers/users/registrations_controller.rb
index 6bbcbdf4a..89af9412d 100644
--- a/app/controllers/users/registrations_controller.rb
+++ b/app/controllers/users/registrations_controller.rb
@@ -9,9 +9,13 @@ class Users::RegistrationsController < Devise::RegistrationsController
   # end
 
   # GET /resource/sign_up
-  # def new
-  #   super
-  # end
+  def new
+    # Allow pre-filling the user email from a query parameter
+    build_resource({ email: sign_up_params[:email] })
+
+    yield resource if block_given?
+    respond_with resource
+  end
 
   # POST /resource
   def create
diff --git a/app/models/procedure.rb b/app/models/procedure.rb
index 34bb4f150..f83227269 100644
--- a/app/models/procedure.rb
+++ b/app/models/procedure.rb
@@ -326,6 +326,18 @@ class Procedure < ApplicationRecord
     end
   end
 
+  def mean_traitement_time
+    mean_time(:en_construction_at, :processed_at)
+  end
+
+  def mean_verification_time
+    mean_time(:en_construction_at, :en_instruction_at)
+  end
+
+  def mean_instruction_time
+    mean_time(:en_instruction_at, :processed_at)
+  end
+
   private
 
   def can_publish?(path)
@@ -388,4 +400,15 @@ class Procedure < ApplicationRecord
     self.durees_conservation_required ||= duree_conservation_dossiers_hors_ds.present? && duree_conservation_dossiers_dans_ds.present?
     true
   end
+
+  def mean_time(start_attribute, end_attribute)
+    times = dossiers
+      .state_termine
+      .pluck(start_attribute, end_attribute)
+      .map { |times| times[1] - times[0] }
+
+    if times.present?
+      times.sum.fdiv(times.size).ceil
+    end
+  end
 end
diff --git a/app/models/user.rb b/app/models/user.rb
index f1287a153..ec69e9b6c 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -24,6 +24,11 @@ class User < ApplicationRecord
 
   before_validation -> { sanitize_email(:email) }
 
+  # Callback provided by Devise
+  def after_confirmation
+    link_invites!
+  end
+
   def self.find_for_france_connect(email, siret)
     user = User.find_by(email: email)
     if user.nil?
@@ -49,4 +54,10 @@ class User < ApplicationRecord
   def owns_or_invite?(dossier)
     owns?(dossier) || invite?(dossier.id)
   end
+
+  private
+
+  def link_invites!
+    Invite.where(email: email).update_all(user_id: id)
+  end
 end
diff --git a/app/views/invite_mailer/invite_guest.html.haml b/app/views/invite_mailer/invite_guest.html.haml
index 2bd76f10d..45ef1cd1b 100644
--- a/app/views/invite_mailer/invite_guest.html.haml
+++ b/app/views/invite_mailer/invite_guest.html.haml
@@ -13,7 +13,7 @@
   Afin de répondre à cette invitation, merci de vous inscrire avec l'adresse email
   = @invite.email
   sur
-  = "#{users_dossiers_invite_url(@invite.id)}?email=#{@invite.email}"
+  = users_dossiers_invite_url(@invite.id, params: { email: @invite.email })
 
 %p
   Bonne journée,
diff --git a/app/views/new_user/dossiers/show/_status_overview.html.haml b/app/views/new_user/dossiers/show/_status_overview.html.haml
index d6e1fd3db..97dc76c4b 100644
--- a/app/views/new_user/dossiers/show/_status_overview.html.haml
+++ b/app/views/new_user/dossiers/show/_status_overview.html.haml
@@ -26,6 +26,11 @@
           = succeed '.' do
             %strong votre dossier passera directement en instruction
 
+        - if dossier.procedure.mean_verification_time
+          - cache(dossier.procedure, expires_in: 1.week) do
+            %p
+              Le temps moyen de vérification pour cette démarche est de #{distance_of_time_in_words(dossier.procedure.mean_verification_time)}.
+
     - elsif dossier.en_instruction?
       .en-instruction
         %p Votre dossier est complet. Il est en cours d’examen par les instructeur de l’administration.
@@ -34,6 +39,10 @@
           %strong
             vous recevrez un email
           avec le résultat.
+        - if dossier.procedure.mean_instruction_time
+          - cache(dossier.procedure, expires_in: 1.week) do
+            %p
+              Le temps moyen d’instruction pour cette démarche est de #{distance_of_time_in_words(dossier.procedure.mean_instruction_time)}.
 
     - elsif dossier.accepte?
       .accepte
diff --git a/app/views/users/registrations/new.html.haml b/app/views/users/registrations/new.html.haml
index 3775c572f..2a11db8ea 100644
--- a/app/views/users/registrations/new.html.haml
+++ b/app/views/users/registrations/new.html.haml
@@ -11,7 +11,7 @@
 
     .column.auth-form
       = devise_error_messages!
-      = form_for User.new, url: user_registration_path, html: { class: "form" } do |f|
+      = form_for resource, url: user_registration_path, html: { class: "form" } do |f|
         %h1 Créez-vous un compte
 
         = f.label :email, "Email"
diff --git a/config/locales/fr.yml b/config/locales/fr.yml
index a114f5417..363a2a904 100644
--- a/config/locales/fr.yml
+++ b/config/locales/fr.yml
@@ -47,7 +47,6 @@ fr:
       submit:
         publish: Publier
         reopen: Réactiver
-
   support:
     info demarche: J'ai un problème lors du remplissage de mon dossier
     info instruction: J'ai une question sur l'instruction de mon dossier
diff --git a/config/routes.rb b/config/routes.rb
index 917ff895f..d8c3447a0 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -70,8 +70,7 @@ Rails.application.routes.draw do
   devise_for :users, controllers: {
     sessions: 'users/sessions',
     registrations: 'users/registrations',
-    passwords: 'users/passwords',
-    confirmations: 'users/confirmations'
+    passwords: 'users/passwords'
   }
 
   devise_scope :user do
diff --git a/spec/controllers/users/confirmations_controller_spec.rb b/spec/controllers/users/confirmations_controller_spec.rb
deleted file mode 100644
index 6da736c12..000000000
--- a/spec/controllers/users/confirmations_controller_spec.rb
+++ /dev/null
@@ -1,23 +0,0 @@
-describe Users::ConfirmationsController, type: :controller do
-  let(:email) { 'mail@beta.gouv.fr' }
-  let(:user) do
-    create(:user,
-      email: email,
-      password: 'a good password',
-      confirmation_token: '123',
-      confirmed_at: nil)
-  end
-
-  before { @request.env["devise.mapping"] = Devise.mappings[:user] }
-
-  describe '#check_invite!' do
-    let!(:invite) { create(:invite, email: email) }
-    let!(:invite2) { create(:invite, email: email) }
-
-    before { get :show, params: { confirmation_token: user.confirmation_token } }
-
-    it 'the new user is connect at his two invite' do
-      expect(User.last.invites.size).to eq(2)
-    end
-  end
-end
diff --git a/spec/controllers/users/dossiers/invites_controller_spec.rb b/spec/controllers/users/dossiers/invites_controller_spec.rb
index c9b0f5e27..ba23279b7 100644
--- a/spec/controllers/users/dossiers/invites_controller_spec.rb
+++ b/spec/controllers/users/dossiers/invites_controller_spec.rb
@@ -33,7 +33,7 @@ describe Users::Dossiers::InvitesController, type: :controller do
 
       context 'when email is not affected at an user' do
         let(:email) { 'new_user@octo.com' }
-        it { is_expected.to redirect_to new_user_registration_path(user_email: email) }
+        it { is_expected.to redirect_to new_user_registration_path(user: { email: email }) }
       end
     end
   end
diff --git a/spec/controllers/users/registrations_controller_spec.rb b/spec/controllers/users/registrations_controller_spec.rb
index 1c9a5793b..58faecedd 100644
--- a/spec/controllers/users/registrations_controller_spec.rb
+++ b/spec/controllers/users/registrations_controller_spec.rb
@@ -8,6 +8,22 @@ describe Users::RegistrationsController, type: :controller do
     @request.env["devise.mapping"] = Devise.mappings[:user]
   end
 
+  describe '#new' do
+    subject! { get :new }
+
+    it { expect(response).to have_http_status(:ok) }
+    it { expect(response).to render_template(:new) }
+
+    context 'when an email address is provided' do
+      render_views true
+      subject! { get :new, params: { user: { email: 'test@exemple.fr' } } }
+
+      it 'prefills the form with the email address' do
+        expect(response.body).to include('test@exemple.fr')
+      end
+    end
+  end
+
   describe '#create' do
     subject do
       post :create, params: { user: user }
diff --git a/spec/factories/dossier.rb b/spec/factories/dossier.rb
index ebadac8b2..8c2fe14fa 100644
--- a/spec/factories/dossier.rb
+++ b/spec/factories/dossier.rb
@@ -97,9 +97,9 @@ FactoryBot.define do
     trait :accepte do
       after(:create) do |dossier, _evaluator|
         dossier.state = Dossier.states.fetch(:accepte)
-        dossier.processed_at = dossier.created_at + 1.minute
-        dossier.en_construction_at = dossier.created_at + 2.minutes
-        dossier.created_at = dossier.created_at + 3.minutes
+        dossier.processed_at ||= dossier.created_at + 1.minute
+        dossier.en_construction_at ||= dossier.created_at + 2.minutes
+        dossier.created_at ||= dossier.created_at + 3.minutes
         dossier.save!
       end
     end
diff --git a/spec/features/new_user/dossier_details_spec.rb b/spec/features/new_user/dossier_details_spec.rb
index 41575988b..ae3ec8248 100644
--- a/spec/features/new_user/dossier_details_spec.rb
+++ b/spec/features/new_user/dossier_details_spec.rb
@@ -10,6 +10,10 @@ describe 'Dossier details:' do
     Flipflop::FeatureSet.current.test!.switch!(:new_dossier_details, true)
   end
 
+  after do
+    Flipflop::FeatureSet.current.test!.switch!(:new_dossier_details, false)
+  end
+
   scenario 'the user can see the summary of the dossier status' do
     visit_dossier dossier
 
@@ -19,6 +23,34 @@ describe 'Dossier details:' do
     expect(page).to have_text(dossier.commentaires.last.body)
   end
 
+  describe "the user can see the mean time they are expected to wait" do
+    context "the dossier is in construction" do
+      before do
+        other_dossier = create(:dossier, :accepte, :for_individual, procedure: simple_procedure, en_construction_at: 10.days.ago, en_instruction_at: Time.now)
+      end
+
+      it "show the proper wait time" do
+        visit_dossier dossier
+
+        expect(page).to have_text("Le temps moyen de vérification pour cette démarche est de 10 jours.")
+      end
+    end
+
+    context "the dossier is in instruction" do
+      let(:dossier) { create(:dossier, :en_instruction, :for_individual, :with_commentaires, user: user, procedure: simple_procedure) }
+
+      before do
+        other_dossier = create(:dossier, :accepte, :for_individual, procedure: simple_procedure, en_instruction_at: 2.months.ago, processed_at: Time.now)
+      end
+
+      it "show the proper wait time" do
+        visit_dossier dossier
+
+        expect(page).to have_text("Le temps moyen d’instruction pour cette démarche est de 2 mois.")
+      end
+    end
+  end
+
   scenario 'the user can see and edit dossier before instruction' do
     visit_dossier dossier
     click_on 'Demande'
diff --git a/spec/features/new_user/invite_spec.rb b/spec/features/new_user/invite_spec.rb
index 41d5f0631..ae9de45d6 100644
--- a/spec/features/new_user/invite_spec.rb
+++ b/spec/features/new_user/invite_spec.rb
@@ -24,11 +24,37 @@ feature 'Invitations' do
       expect(page).to have_field('Libelle du champ', with: 'Some edited value')
     end
 
+    context 'when inviting someone without an existing account' do
+      let(:invite) { create(:invite_user, dossier: dossier, user: nil) }
+      let(:user_password) { 'l33tus3r' }
+
+      scenario 'an invited user can register using the registration link sent in the invitation email' do
+        # Click the invitation link
+        visit users_dossiers_invite_path(invite.id, params: { email: invite.email })
+
+        # Create the account
+        expect(page).to have_current_path(new_user_registration_path, ignore_query: true)
+        expect(page).to have_field('user_email', with: invite.email)
+        fill_in 'user_password', with: user_password
+        click_on 'Créer un compte'
+
+        expect(page).to have_content('lien de confirmation')
+
+        # Confirm the email
+        user = User.find_by(email: invite.email)
+        visit Rails.application.routes.url_helpers.user_confirmation_path(confirmation_token: user.confirmation_token)
+        submit_login_form(user.email, user_password)
+
+        # The user should be redirected to the dossier they was invited on
+        expect(page).to have_current_path(brouillon_dossier_path(dossier))
+      end
+    end
+
     scenario 'an invited user can see and edit the draft', js: true do
       visit users_dossiers_invite_path(invite)
       expect(page).to have_current_path(new_user_session_path)
 
-      submit_login_form(invited_user)
+      submit_login_form(invited_user.email, invited_user.password)
       expect(page).to have_current_path(brouillon_dossier_path(dossier))
       expect(page).to have_no_selector('.button.invite-user-action')
 
@@ -42,7 +68,7 @@ feature 'Invitations' do
       visit users_dossiers_invite_path(invite)
       expect(page).to have_current_path(new_user_session_path)
 
-      submit_login_form(invited_user)
+      submit_login_form(invited_user.email, invited_user.password)
       expect(page).to have_current_path(brouillon_dossier_path(dossier))
 
       expect(page).to have_button('Soumettre le dossier', disabled: true)
@@ -68,7 +94,7 @@ feature 'Invitations' do
       visit users_dossiers_invite_path(invite)
       expect(page).to have_current_path(new_user_session_path)
 
-      submit_login_form(invited_user)
+      submit_login_form(invited_user.email, invited_user.password)
       expect(page).to have_current_path(users_dossiers_invite_path(invite))
       expect(page).to have_no_selector('.button.invite-user-action')
       expect(page).to have_text("Dossier nº #{dossier.id}")
@@ -92,13 +118,13 @@ feature 'Invitations' do
   def log_in(user)
     visit '/'
     click_on 'Connexion'
-    submit_login_form(user)
+    submit_login_form(user.email, user.password)
     expect(page).to have_current_path(dossiers_path)
   end
 
-  def submit_login_form(user)
-    fill_in 'user_email', with: user.email
-    fill_in 'user_password', with: user.password
+  def submit_login_form(email, password)
+    fill_in 'user_email', with: email
+    fill_in 'user_password', with: password
     click_on 'Se connecter'
   end
 
diff --git a/spec/models/user_spec.rb b/spec/models/user_spec.rb
index 0175811f2..d4217f023 100644
--- a/spec/models/user_spec.rb
+++ b/spec/models/user_spec.rb
@@ -1,6 +1,25 @@
 require 'spec_helper'
 
 describe User, type: :model do
+  describe '#after_confirmation' do
+    let(:email) { 'mail@beta.gouv.fr' }
+    let!(:invite)  { create(:invite, email: email) }
+    let!(:invite2) { create(:invite, email: email) }
+    let(:user) do
+      create(:user,
+        email: email,
+        password: 'a good password',
+        confirmation_token: '123',
+        confirmed_at: nil)
+    end
+
+    it 'when confirming a user, it links the pending invitations to this user' do
+      expect(user.invites.size).to eq(0)
+      user.confirm
+      expect(user.reload.invites.size).to eq(2)
+    end
+  end
+
   describe '#find_for_france_connect' do
     let(:siret) { '00000000000000' }
     context 'when user exist' do