diff --git a/high-level-tests/e2e/cypress/support/step_definitions/member.js b/high-level-tests/e2e/cypress/support/step_definitions/member.js
index becff64d1e4..795e91f0db3 100644
--- a/high-level-tests/e2e/cypress/support/step_definitions/member.js
+++ b/high-level-tests/e2e/cypress/support/step_definitions/member.js
@@ -31,4 +31,5 @@ When(`j'invite {string} à rejoindre l'organisation`, (emailAddresses) => {
     .parent()
     .within(() => cy.get("textarea").type(emailAddresses));
   cy.get("button").contains("Inviter").click();
+  cy.get("button").contains("Valider").click();
 });
diff --git a/orga/app/components/team/invite-form.hbs b/orga/app/components/team/invite-form.hbs
index 84c59a9edf4..2702c6d1325 100644
--- a/orga/app/components/team/invite-form.hbs
+++ b/orga/app/components/team/invite-form.hbs
@@ -6,21 +6,46 @@
       @id="email"
       type="email"
       @value={{@email}}
+      aria-invalid={{if this.emailError "true" "false"}}
+      aria-describedby="email-error"
       class="invite-form__email-field"
       @requiredLabel={{t "common.form.mandatory-fields-title"}}
       {{on "change" @onUpdateEmail}}
     >
       <:label>{{t "pages.team-new-item.input-label"}}</:label>
     </PixTextarea>
+    {{#if this.emailError}}
+      <p id="email-error" class="invite-form__error-message">{{this.emailError}}</p>
+    {{/if}}
   </div>
 
   <div class="form__validation">
     <PixButton @triggerAction={{@onCancel}} @variant="secondary">
       {{t "common.actions.cancel"}}
     </PixButton>
-    <PixButton @type="submit" @isLoading={{@isLoading}}>
+    <PixButton @triggerAction={{this.openModal}} @variant="secondary">
       {{t "pages.team-new-item.invite-button"}}
     </PixButton>
   </div>
 
+  <PixModal
+    class="invite-form__modal"
+    @title={{t "pages.team-new.invite-form-modal.title"}}
+    @showModal={{this.modalOpen}}
+    @onCloseButtonClick={{this.closeModal}}
+  >
+    <:content>
+      <p>{{t "pages.team-new.invite-form-modal.warning"}}</p>
+      <p>{{t "pages.team-new.invite-form-modal.question"}}</p>
+    </:content>
+
+    <:footer>
+      <PixButton @variant="secondary" @isBorderVisible={{true}} @triggerAction={{this.closeModal}}>
+        {{t "common.actions.cancel"}}
+      </PixButton>
+      <PixButton @variant="secondary" @triggerAction={{@onSubmit}} @isLoading={{this.isLoading}}>{{t
+          "pages.team-new.invite-form-modal.confirm"
+        }}</PixButton>
+    </:footer>
+  </PixModal>
 </form>
\ No newline at end of file
diff --git a/orga/app/components/team/invite-form.js b/orga/app/components/team/invite-form.js
new file mode 100644
index 00000000000..82839ed6b6f
--- /dev/null
+++ b/orga/app/components/team/invite-form.js
@@ -0,0 +1,35 @@
+import { action } from '@ember/object';
+import { service } from '@ember/service';
+import Component from '@glimmer/component';
+import { tracked } from '@glimmer/tracking';
+
+import isEmailValid from '../../utils/email-validator';
+
+export default class InviteForm extends Component {
+  @service intl;
+  @tracked modalOpen = false;
+  @tracked emailError = null;
+
+  @action
+  openModal() {
+    const emailInput = this.args?.email?.trim();
+    if (!emailInput) {
+      this.emailError = this.intl.t('pages.team-new.errors.mandatory-email-field');
+      return;
+    }
+    const emails = emailInput.split(',').map((email) => email.trim());
+    const areEmailsValid = emails.every((email) => isEmailValid(email));
+
+    if (!areEmailsValid) {
+      this.emailError = this.intl.t('pages.team-new.errors.invalid-input');
+      return;
+    }
+    this.emailError = null;
+    this.modalOpen = true;
+  }
+
+  @action
+  closeModal() {
+    this.modalOpen = false;
+  }
+}
diff --git a/orga/app/styles/app.scss b/orga/app/styles/app.scss
index a46e71e74dd..0574d9e9124 100644
--- a/orga/app/styles/app.scss
+++ b/orga/app/styles/app.scss
@@ -40,6 +40,7 @@
 @use 'components/progress-bar' as *;
 @use 'components/register-form' as *;
 @use 'components/team' as *;
+@use 'components/team/invite-form' as *;
 @use 'components/login-or-register' as *;
 @use 'components/manage-authentication-method-modal' as *;
 @use 'components/participation-filters' as *;
diff --git a/orga/app/styles/components/team/invite-form.scss b/orga/app/styles/components/team/invite-form.scss
new file mode 100644
index 00000000000..eeadebce346
--- /dev/null
+++ b/orga/app/styles/components/team/invite-form.scss
@@ -0,0 +1,15 @@
+@use 'pix-design-tokens/typography';
+
+.invite-form {
+
+  &__email-field {
+    min-height: 70px;
+  }
+
+  &__error-message {
+    @extend %pix-body-s;
+
+    margin-top: var(--pix-spacing-2x);
+    color: var(--pix-error-700);
+  }
+}
diff --git a/orga/app/styles/pages/authenticated/team/new.scss b/orga/app/styles/pages/authenticated/team/new.scss
index 05e5c489a14..9f279e27cb4 100644
--- a/orga/app/styles/pages/authenticated/team/new.scss
+++ b/orga/app/styles/pages/authenticated/team/new.scss
@@ -10,7 +10,4 @@
   }
 }
 
-.invite-form__email-field {
-  min-height: 70px;
-}
 
diff --git a/orga/tests/acceptance/team-creation-test.js b/orga/tests/acceptance/team-creation-test.js
index a1af6569f65..b5a289736c3 100644
--- a/orga/tests/acceptance/team-creation-test.js
+++ b/orga/tests/acceptance/team-creation-test.js
@@ -8,6 +8,7 @@ import { module, test } from 'qunit';
 import authenticateSession from '../helpers/authenticate-session';
 import setupIntl from '../helpers/setup-intl';
 import { createPrescriberByUser, createUserMembershipWithRole } from '../helpers/test-init';
+import { waitForDialog } from '../helpers/wait-for';
 
 module('Acceptance | Team Creation', function (hooks) {
   setupApplicationTest(hooks);
@@ -55,6 +56,7 @@ module('Acceptance | Team Creation', function (hooks) {
       let inputLabel;
       let cancelButton;
       let inviteButton;
+      let confirmButton;
 
       hooks.beforeEach(async function () {
         user = createUserMembershipWithRole('ADMIN');
@@ -67,6 +69,7 @@ module('Acceptance | Team Creation', function (hooks) {
         inputLabel = `${t('pages.team-new-item.input-label')} *`;
         inviteButton = t('pages.team-new-item.invite-button');
         cancelButton = t('common.actions.cancel');
+        confirmButton = t('pages.team-new.invite-form-modal.confirm');
       });
 
       test('it should be accessible', async function (assert) {
@@ -95,6 +98,12 @@ module('Acceptance | Team Creation', function (hooks) {
         await clickByName(inviteButton);
 
         // then
+        await waitForDialog();
+
+        //when
+        await clickByName(confirmButton);
+
+        //then
         const organizationInvitation = server.db.organizationInvitations[server.db.organizationInvitations.length - 1];
 
         assert.strictEqual(organizationInvitation.email, email);
@@ -118,6 +127,9 @@ module('Acceptance | Team Creation', function (hooks) {
         // when
         await clickByName(inviteButton);
 
+        await waitForDialog();
+        await clickByName(confirmButton);
+
         // then
         assert.ok(screen.getByText(t('pages.team-new.success.multiple-invitations')));
       });
@@ -182,6 +194,8 @@ module('Acceptance | Team Creation', function (hooks) {
 
         // when
         await clickByName(inviteButton);
+        await waitForDialog();
+        await clickByName(confirmButton);
 
         // then
 
@@ -211,6 +225,8 @@ module('Acceptance | Team Creation', function (hooks) {
 
         // when
         await clickByName(inviteButton);
+        await waitForDialog();
+        await clickByName(confirmButton);
 
         // then
 
@@ -240,6 +256,8 @@ module('Acceptance | Team Creation', function (hooks) {
 
         // when
         await clickByName(inviteButton);
+        await waitForDialog();
+        await clickByName(confirmButton);
 
         // then
 
@@ -269,6 +287,8 @@ module('Acceptance | Team Creation', function (hooks) {
 
         // when
         await clickByName(inviteButton);
+        await waitForDialog();
+        await clickByName(confirmButton);
 
         // then
 
@@ -302,6 +322,8 @@ module('Acceptance | Team Creation', function (hooks) {
 
             // When
             await clickByName(inviteButton);
+            await waitForDialog();
+            await clickByName(confirmButton);
 
             // Then
             const expectedErrorMessage = t('pages.team-new.errors.sending-email-to-invalid-email-address', {
diff --git a/orga/tests/integration/components/team/invite-form-test.js b/orga/tests/integration/components/team/invite-form-test.js
index e445d0dd316..2c99dee6be7 100644
--- a/orga/tests/integration/components/team/invite-form-test.js
+++ b/orga/tests/integration/components/team/invite-form-test.js
@@ -1,10 +1,12 @@
 import { fillByLabel, render } from '@1024pix/ember-testing-library';
+import { click } from '@ember/test-helpers';
 import { hbs } from 'ember-cli-htmlbars';
 import { t } from 'ember-intl/test-support';
 import { module, test } from 'qunit';
 import sinon from 'sinon';
 
 import setupIntlRenderingTest from '../../../helpers/setup-intl-rendering';
+import { waitForDialog } from '../../../helpers/wait-for';
 
 module('Integration | Component | Team::InviteForm', function (hooks) {
   setupIntlRenderingTest(hooks);
@@ -17,16 +19,16 @@ module('Integration | Component | Team::InviteForm', function (hooks) {
 
   test('it should contain email input and validation button', async function (assert) {
     // when
-    await render(
+    const screen = await render(
       hbs`<Team::InviteForm @onSubmit={{this.inviteSpy}} @onCancel={{this.cancelSpy}} @onUpdateEmail={{this.updateEmail}} />`,
     );
 
     // then
     assert.dom('#email').exists();
     assert.dom('#email').isRequired();
-    assert.dom('button[type="submit"]').exists();
+    assert.ok(screen.getByText(t('pages.team-new-item.invite-button')));
+    assert.dom(screen.queryByRole('dialog')).doesNotExist();
   });
-
   test('it should bind organizationInvitation properties with email form input', async function (assert) {
     // given
     this.set('email', 'toto@org.fr');
@@ -46,4 +48,79 @@ module('Integration | Component | Team::InviteForm', function (hooks) {
     // then
     assert.ok(this.updateEmail.called);
   });
+  test('it should open confirmation modal when invite button is clicked', async function (assert) {
+    // given
+    this.set('email', 'toto@org.fr');
+    const screen = await render(
+      hbs`<Team::InviteForm
+  @email={{this.email}}
+  @onSubmit={{this.inviteSpy}}
+  @onCancel={{this.cancelSpy}}
+  @onUpdateEmail={{this.updateEmail}}
+/>`,
+    );
+
+    // when
+    const inputLabel = `${t('pages.team-new-item.input-label')} *`;
+    await fillByLabel(inputLabel, 'dev@example.net');
+    const inviteButton = await screen.findByRole('button', {
+      name: t('pages.team-new-item.invite-button'),
+    });
+
+    await click(inviteButton);
+    await waitForDialog();
+
+    // then
+    assert.dom(screen.getByRole('dialog')).isVisible();
+  });
+  test('it should display error message when no email is in input and invite button is clicked', async function (assert) {
+    // given
+    this.set('email', '');
+    const errorMessage = t('pages.team-new.errors.mandatory-email-field');
+    const screen = await render(
+      hbs`<Team::InviteForm
+  @email={{this.email}}
+  @onSubmit={{this.inviteSpy}}
+  @onCancel={{this.cancelSpy}}
+  @onUpdateEmail={{this.updateEmail}}
+/>`,
+    );
+
+    // when
+    const inputLabel = `${t('pages.team-new-item.input-label')} *`;
+    await fillByLabel(inputLabel, '');
+    const inviteButton = await screen.findByRole('button', {
+      name: t('pages.team-new-item.invite-button'),
+    });
+
+    await click(inviteButton);
+
+    // then
+    assert.dom(await screen.findByText(errorMessage)).exists();
+    assert.dom(screen.queryByRole('dialog')).doesNotExist();
+  });
+  test('it should display error message when email format is not correct', async function (assert) {
+    // given
+    this.set('email', 'toto@org.fr;alex-mail.incorrect');
+    const errorMessage = t('pages.team-new.errors.invalid-input');
+    const screen = await render(
+      hbs`<Team::InviteForm
+  @email={{this.email}}
+  @onSubmit={{this.inviteSpy}}
+  @onCancel={{this.cancelSpy}}
+  @onUpdateEmail={{this.updateEmail}}
+/>`,
+    );
+
+    // when
+    const inviteButton = await screen.findByRole('button', {
+      name: t('pages.team-new-item.invite-button'),
+    });
+
+    await click(inviteButton);
+
+    // then
+    assert.dom(await screen.findByText(errorMessage)).exists();
+    assert.dom(screen.queryByRole('dialog')).doesNotExist();
+  });
 });
diff --git a/orga/translations/en.json b/orga/translations/en.json
index b09aa6ea197..4a11123fd4b 100644
--- a/orga/translations/en.json
+++ b/orga/translations/en.json
@@ -1669,6 +1669,8 @@
       "email-requirement": "Enter here the email address of the member you want to invite.",
       "errors": {
         "default": "The service is temporarily unavailable. Please try again later.",
+        "invalid-input": "The data entered was not in the correct format",
+        "mandatory-email-field": "This field is mandatory",
         "sending-email-to-invalid-email-address": "Sending email to the address {email} failed. The sending server replied: \"{errorMessage}\".",
         "status": {
           "400": "The email address format is invalid.",
@@ -1677,6 +1679,12 @@
           "500": "Something went wrong. Please try again."
         }
       },
+      "invite-form-modal": {
+        "confirm": "Confirm",
+        "question": "Do you want to continue? ",
+        "title": "Confirm the addition of new team members",
+        "warning": "Members you add will have access to participant results and campaign analytics."
+      },
       "invited-members": "By clicking on the link provided in the invitation, the invited members will be able to create an account or log in with an existing Pix account.",
       "several-email-requirement": "Invite several members by separating the email addresses with commas.",
       "success": {
diff --git a/orga/translations/fr.json b/orga/translations/fr.json
index 17550491e50..a8c16a468af 100644
--- a/orga/translations/fr.json
+++ b/orga/translations/fr.json
@@ -1675,6 +1675,8 @@
       "email-requirement": "Saisissez ici l'adresse e-mail du membre que vous souhaitez inviter.",
       "errors": {
         "default": "Le service est momentanément indisponible. Veuillez réessayer ultérieurement.",
+        "invalid-input": "Les données que vous avez soumises ne sont pas au bon format",
+        "mandatory-email-field": "Ce champ est obligatoire",
         "sending-email-to-invalid-email-address": "L'envoi d'e-mail pour l'adresse {email} a échoué. Le serveur d'envoi a répondu : \"{errorMessage}\"",
         "status": {
           "400": "Le format de l'adresse e-mail est incorrect.",
@@ -1683,6 +1685,12 @@
           "500": "Quelque chose s'est mal passé. Veuillez réessayer."
         }
       },
+      "invite-form-modal": {
+        "confirm": "Valider",
+        "question": "Voulez-vous continuer ? ",
+        "title": "Confirmer l’ajout de nouveaux membres dans l'équipe",
+        "warning": "Les membres que vous ajoutez auront accès aux résultats des participants et à l’analyse des campagnes."
+      },
       "invited-members": "À la réception de l'e-mail, les invités pourront choisir de se créer un compte Pix ou de se connecter avec un compte Pix existant.",
       "several-email-requirement": "Vous pouvez inviter plusieurs membres en séparant les adresses e-mails par des virgules.",
       "success": {
diff --git a/orga/translations/nl.json b/orga/translations/nl.json
index 7ca3a148e95..c83a6550c39 100644
--- a/orga/translations/nl.json
+++ b/orga/translations/nl.json
@@ -1673,6 +1673,8 @@
       "email-requirement": "Voer hier het e-mailadres in van het lid dat je wilt uitnodigen.",
       "errors": {
         "default": "De service is tijdelijk niet beschikbaar. Probeer het later nog eens.",
+        "invalid-input": "The data entered was not in the correct format",
+        "mandatory-email-field": "This field is mandatory",
         "sending-email-to-invalid-email-address": "Het verzenden van e-mail naar adres {email} is mislukt. De verzendende server antwoordde: \"{errorMessage}\".",
         "status": {
           "400": "De indeling van het e-mailadres is onjuist.",
@@ -1682,6 +1684,12 @@
         }
       },
       "invited-members": "Als gasten de e-mail ontvangen, kunnen ze kiezen of ze een Pix-account willen aanmaken of willen inloggen met een bestaand Pix-account.",
+      "invite-form-modal": {
+        "confirm": "Confirm",
+        "question": "Do you want to continue? ",
+        "title": "Confirm the addition of new team members",
+        "warning": "Members you add will have access to participant results and campaign analytics."
+      },
       "several-email-requirement": "Je kunt meerdere leden uitnodigen door e-mailadressen te scheiden met komma's.",
       "success": {
         "invitation": "Er is een uitnodiging verstuurd naar het e-mailadres {email}.",