diff --git a/app/components/procedure/invitation_with_typo_component.rb b/app/components/procedure/invitation_with_typo_component.rb
new file mode 100644
index 000000000..bec642cfa
--- /dev/null
+++ b/app/components/procedure/invitation_with_typo_component.rb
@@ -0,0 +1,21 @@
+class Procedure::InvitationWithTypoComponent < ApplicationComponent
+  def initialize(maybe_typo:, url:, params:, title:)
+    @maybe_typo = maybe_typo
+    @url = url
+    @params = params
+    @title = title
+  end
+
+  def render?
+    @maybe_typo.present?
+  end
+
+  def maybe_typos
+    email_checker = EmailChecker.new
+
+    @maybe_typo.map do |actual_email|
+      suggested_email = email_checker.check(email: actual_email)[:email_suggestions].first
+      [actual_email, suggested_email]
+    end
+  end
+end
diff --git a/app/components/procedure/invitation_with_typo_component/invitation_with_typo_component.html.haml b/app/components/procedure/invitation_with_typo_component/invitation_with_typo_component.html.haml
new file mode 100644
index 000000000..12fdcc1dd
--- /dev/null
+++ b/app/components/procedure/invitation_with_typo_component/invitation_with_typo_component.html.haml
@@ -0,0 +1,10 @@
+= render Dsfr::AlertComponent.new(title: "nous pensons avoir identifié une faute de frappe : ", state: :warning, extra_class_names: 'fr-mb-3w') do |c|
+  - c.with_body do
+    %p= @title
+    %ul
+      - maybe_typos.each do |(actual_email, suggested_email)|
+        %li
+          = "Je confirme "
+          = button_to "#{actual_email}", @url, method: :POST, params: @params.call(actual_email), class: 'fr-btn fr-btn--tertiary fr-btn--sm', form: {class: 'inline'}
+          = " ou "
+          = button_to "#{suggested_email}", @url, method: :POST, params: @params.call(suggested_email), class: 'fr-btn fr-btn--tertiary fr-btn--sm', form: {class: 'inline'}
diff --git a/app/controllers/administrateurs/experts_procedures_controller.rb b/app/controllers/administrateurs/experts_procedures_controller.rb
index 1a59bcba5..d606e0821 100644
--- a/app/controllers/administrateurs/experts_procedures_controller.rb
+++ b/app/controllers/administrateurs/experts_procedures_controller.rb
@@ -1,25 +1,31 @@
 module Administrateurs
   class ExpertsProceduresController < AdministrateurController
+    include EmailSanitizableConcern
     before_action :retrieve_procedure
+    before_action :retrieve_experts_procedure, only: [:index, :create]
+    before_action :retrieve_experts_emails, only: [:index, :create]
 
     def index
-      @experts_procedure = @procedure
-        .experts_procedures
-        .where(revoked_at: nil)
-        .sort_by { |expert_procedure| expert_procedure.expert.email }
-      @experts_emails = experts_procedure_emails
     end
 
     def create
       emails = params['emails'].presence || [].to_json
-      emails = JSON.parse(emails).map(&:strip).map(&:downcase)
+      @maybe_typo, emails = JSON.parse(emails)
+        .map { EmailSanitizer.sanitize(_1) }
+        .partition { EmailChecker.new.check(email: _1)[:email_suggestions].present? }
+      errors = if !@maybe_typo.empty?
+        ["Attention, nous pensons avoir identifié une faute de frappe dans les invitations : #{@maybe_typo.join(', ')}"]
+      else
+        []
+      end
+      emails += [EmailSanitizer.sanitize(params['maybe_typo'])] if params['maybe_typo'].present?
 
       valid_users, invalid_users = emails
         .map { |email| User.create_or_promote_to_expert(email, SecureRandom.hex) }
         .partition(&:valid?)
 
       if invalid_users.any?
-        flash[:alert] = invalid_users
+        errors += invalid_users
           .filter { |user| user.errors.present? }
           .map { |user| "#{user.email} : #{user.errors.full_messages_for(:email).join(', ')}" }
       end
@@ -37,7 +43,9 @@ module Administrateurs
           value: valid_users.map(&:email).join(', '),
           procedure: @procedure.id)
       end
-      redirect_to admin_procedure_experts_path(@procedure)
+
+      flash[:alert] = errors.join(". ") if !errors.empty?
+      render :index
     end
 
     def update
@@ -57,8 +65,12 @@ module Administrateurs
 
     private
 
-    def experts_procedure_emails
-      @procedure.experts.map(&:email).sort
+    def retrieve_experts_procedure
+      @experts_procedure ||= @procedure.experts_procedures.where(revoked_at: nil).sort_by { _1.expert.email }
+    end
+
+    def retrieve_experts_emails
+      @experts_emails ||= @experts_procedure.map { _1.expert.email }
     end
 
     def expert_procedure_params
diff --git a/app/views/administrateurs/experts_procedures/index.html.haml b/app/views/administrateurs/experts_procedures/index.html.haml
index dc8909f82..daad54134 100644
--- a/app/views/administrateurs/experts_procedures/index.html.haml
+++ b/app/views/administrateurs/experts_procedures/index.html.haml
@@ -58,6 +58,7 @@
 
       - if @procedure.experts_require_administrateur_invitation?
         .card
+          = render Procedure::InvitationWithTypoComponent.new(maybe_typo: @maybe_typo, url: admin_procedure_experts_path(@procedure), params: ->(email) { { maybe_typo: email } }, title: "Avant d'ajouter l'email à la liste d'expert prédéfinie, veuillez confirmer" )
           = form_for :experts_procedure,
             url: admin_procedure_experts_path(@procedure),
             html: { class: 'form' } do |f|
diff --git a/spec/controllers/administrateurs/experts_procedures_controller_spec.rb b/spec/controllers/administrateurs/experts_procedures_controller_spec.rb
index 6a9ca33d5..46d753ae8 100644
--- a/spec/controllers/administrateurs/experts_procedures_controller_spec.rb
+++ b/spec/controllers/administrateurs/experts_procedures_controller_spec.rb
@@ -21,23 +21,45 @@ describe Administrateurs::ExpertsProceduresController, type: :controller do
   describe '#create' do
     let(:expert) { create(:expert) }
     let(:expert2) { create(:expert) }
+    let(:procedure) { create :procedure, administrateur: admin, experts_require_administrateur_invitation: true }
 
-    subject do
-      post :create, params: {
-        procedure_id: procedure.id,
-        emails: "[\"#{expert.email}\",\"#{expert2.email}\"]"
-      }
+    subject { post :create, params: params }
+    before { subject }
+
+    context 'when inviting multiple valid experts' do
+      let(:params) { { procedure_id: procedure.id, emails: [expert.email, expert2.email].to_json } }
+
+      it 'creates experts' do
+        expect(procedure.experts.include?(expert)).to be_truthy
+        expect(procedure.experts.include?(expert2)).to be_truthy
+        expect(flash.notice).to be_present
+        expect(assigns(:maybe_typo)).to eq([])
+        expect(response).to have_http_status(:success)
+      end
     end
 
-    before do
-      subject
+    context 'when inviting expert using an email with typos' do
+      let(:params) { { procedure_id: procedure.id, emails: ['martin@oraneg.fr'].to_json } }
+      render_views
+      it 'warns' do
+        expect(flash.alert).to be_present
+        expect(assigns(:maybe_typo)).to eq(['martin@oraneg.fr'])
+        expect(response).to have_http_status(:success)
+      end
     end
 
-    context 'of multiple experts' do
-      it { expect(procedure.experts.include?(expert)).to be_truthy }
-      it { expect(procedure.experts.include?(expert2)).to be_truthy }
-      it { expect(flash.notice).to be_present }
-      it { expect(response).to redirect_to(admin_procedure_experts_path(procedure)) }
+    context 'when forcing email with typos' do
+      let(:maybe_typo) { 'martin@oraneg.fr' }
+      let(:params) { { procedure_id: procedure.id, maybe_typo: } }
+
+      it 'works' do
+        created_user = User.where(email: maybe_typo).first
+        expect(created_user).to be_an_instance_of(User)
+        expect(created_user.expert).to be_an_instance_of(Expert)
+        expect(procedure.experts.include?(created_user.expert)).to be_truthy
+        expect(flash.notice).to be_present
+        expect(response).to have_http_status(:success)
+      end
     end
   end