diff --git a/src/graphql/user.ts b/src/graphql/user.ts
index 22e476b1b..9de34aa8e 100644
--- a/src/graphql/user.ts
+++ b/src/graphql/user.ts
@@ -2,8 +2,18 @@ import gql from "graphql-tag";
 import { ACTOR_FRAGMENT } from "./actor";
 
 export const CREATE_USER = gql`
-  mutation CreateUser($email: String!, $password: String!, $locale: String) {
-    createUser(email: $email, password: $password, locale: $locale) {
+  mutation CreateUser(
+    $email: String!
+    $password: String!
+    $moderation: String!
+    $locale: String
+  ) {
+    createUser(
+      email: $email
+      password: $password
+      moderation: $moderation
+      locale: $locale
+    ) {
       email
       confirmationSentAt
     }
diff --git a/src/i18n/en_US.json b/src/i18n/en_US.json
index f6ae1ba5f..3ab645f21 100644
--- a/src/i18n/en_US.json
+++ b/src/i18n/en_US.json
@@ -976,6 +976,7 @@
   "Registration is closed.": "Registration is closed.",
   "Registration is currently closed.": "Registration is currently closed.",
   "Registration is moderated, new user must be validated.": "Registration is moderated, new user must be validated.",
+  "Registration is subject to moderation, indicate your motivation.": "Registration is subject to moderation, indicate your motivation.",
   "Registrations": "Registrations",
   "Registrations are restricted by allowlisting.": "Registrations are restricted by allowlisting.",
   "Reject": "Reject",
diff --git a/src/views/User/RegisterView.vue b/src/views/User/RegisterView.vue
index f8136f7e8..42d9ddfd6 100644
--- a/src/views/User/RegisterView.vue
+++ b/src/views/User/RegisterView.vue
@@ -107,7 +107,7 @@
 
           <o-field
             :label="t('Password')"
-            :type="errorPasswordType"
+            :variant="errorPasswordType"
             :message="errorPasswordMessage"
             label-for="password"
           >
@@ -123,6 +123,28 @@
             />
           </o-field>
 
+          <o-field
+            v-if="config?.registrationsModeration"
+            :label="
+              t(
+                'Registration is subject to moderation, indicate your motivation.'
+              )
+            "
+            :variant="errorModerationType"
+            :message="errorModerationMessage"
+            label-for="moderation"
+          >
+            <o-input
+              aria-required="true"
+              required
+              :autosize="false"
+              id="moderation"
+              type="textarea"
+              v-model="credentials.moderation"
+              expanded
+            />
+          </o-field>
+
           <div class="flex items-start mb-6 mt-2">
             <div class="flex items-center h-5">
               <input
@@ -184,6 +206,7 @@
                 query: {
                   email: credentials.email,
                   password: credentials.password,
+                  moderation: credentials.moderation,
                 },
               }"
               >{{ t("Login") }}</o-button
@@ -241,7 +264,12 @@ import { AbsintheGraphQLErrors } from "@/types/errors.model";
 
 type errorType = "danger" | "warning";
 type errorMessage = { type: errorType; message: string };
-type credentialsType = { email: string; password: string; locale: string };
+type credentialsType = {
+  email: string;
+  password: string;
+  moderation: string;
+  locale: string;
+};
 
 const { t, locale } = useI18n({ useScope: "global" });
 const route = useRoute();
@@ -255,11 +283,14 @@ const credentials = reactive<credentialsType>({
   email: typeof route.query.email === "string" ? route.query.email : "",
   password:
     typeof route.query.password === "string" ? route.query.password : "",
+  moderation:
+    typeof route.query.moderation === "string" ? route.query.moderation : "",
   locale: "en",
 });
 
 const emailErrors = ref<errorMessage[]>([]);
 const passwordErrors = ref<errorMessage[]>([]);
+const moderationError = ref<errorMessage[]>([]);
 
 const sendingForm = ref(false);
 
@@ -298,6 +329,12 @@ onError((error) => {
             message: message[0] as string,
           });
           break;
+        case "moderation":
+          moderationError.value.push({
+            type: "danger" as errorType,
+            message: message[0] as string,
+          });
+          break;
         default:
       }
     }
@@ -311,6 +348,7 @@ const submit = async (): Promise<void> => {
   try {
     emailErrors.value = [];
     passwordErrors.value = [];
+    moderationError.value = [];
 
     mutate(credentials);
   } catch (error: any) {
@@ -343,11 +381,14 @@ const maxErrorType = (errors: errorMessage[]): errorType | undefined => {
 const errorEmailType = computed((): errorType | undefined => {
   return maxErrorType(emailErrors.value);
 });
-
 const errorPasswordType = computed((): errorType | undefined => {
   return maxErrorType(passwordErrors.value);
 });
 
+const errorModerationType = computed((): errorType | undefined => {
+  return maxErrorType(moderationError.value);
+});
+
 const errorEmailMessage = computed((): string => {
   return emailErrors.value.map(({ message }) => message).join(" ");
 });
@@ -355,4 +396,8 @@ const errorEmailMessage = computed((): string => {
 const errorPasswordMessage = computed((): string => {
   return passwordErrors.value?.map(({ message }) => message).join(" ");
 });
+
+const errorModerationMessage = computed((): string => {
+  return moderationError.value?.map(({ message }) => message).join(" ");
+});
 </script>
diff --git a/tests/unit/specs/components/User/RegisterView.spec.ts b/tests/unit/specs/components/User/RegisterView.spec.ts
new file mode 100644
index 000000000..6eb618369
--- /dev/null
+++ b/tests/unit/specs/components/User/RegisterView.spec.ts
@@ -0,0 +1,185 @@
+import { config, mount } from "@vue/test-utils";
+import RegisterView from "@/views/User/RegisterView.vue";
+import { createMockClient, RequestHandler } from "mock-apollo-client";
+import flushPromises from "flush-promises";
+import { configMock } from "../../mocks/config";
+import { CONFIG } from "@/graphql/config";
+import { CREATE_USER } from "@/graphql/user";
+import { beforeEach, describe, expect, it, vi } from "vitest";
+import { DefaultApolloClient } from "@vue/apollo-composable";
+import Oruga from "@oruga-ui/oruga-next";
+import {
+  VueRouterMock,
+  createRouterMock,
+  injectRouterMock,
+} from "vue-router-mock";
+import { nullMock } from "../../common";
+
+config.global.plugins.push(Oruga);
+config.plugins.VueWrapper.install(VueRouterMock);
+
+let requestHandlers: Record<string, RequestHandler>;
+
+const generateWrapper = (
+  customRegModeration: boolean = false,
+  customRequestHandlers: Record<string, RequestHandler> = {}
+) => {
+  const mockClient = createMockClient();
+
+  const config_value = {
+    ...configMock,
+  };
+  if (customRegModeration) {
+    config_value.data.config.registrationsModeration = true;
+  }
+
+  requestHandlers = {
+    configQueryHandler: vi.fn().mockResolvedValue(config_value),
+    createUserHandler: vi.fn().mockResolvedValue(nullMock),
+    ...customRequestHandlers,
+  };
+
+  mockClient.setRequestHandler(CONFIG, requestHandlers.configQueryHandler);
+  mockClient.setRequestHandler(CREATE_USER, requestHandlers.createUserHandler);
+
+  return mount(RegisterView, {
+    global: {
+      stubs: ["router-link", "router-view"],
+      provide: {
+        [DefaultApolloClient]: mockClient,
+      },
+    },
+  });
+};
+
+describe("Register page", () => {
+  const router = createRouterMock({
+    spy: {
+      create: (fn) => vi.fn(fn),
+      reset: (spy) => spy.mockReset(),
+    },
+  });
+  beforeEach(() => {
+    // inject it globally to ensure `useRoute()`, `$route`, etc work
+    // properly and give you access to test specific functions
+    injectRouterMock(router);
+  });
+
+  it("register without moderation", async () => {
+    const wrapper = generateWrapper();
+    expect(wrapper.router).toBe(router);
+    await flushPromises();
+    expect(wrapper.html()).toMatchSnapshot();
+    expect(wrapper.find("form").exists()).toBe(true);
+    wrapper.find('form input[type="email"]').setValue("some@email.tld");
+    wrapper.find('form input[type="password"]').setValue("somepassword");
+    wrapper.find("form").trigger("submit");
+    await wrapper.vm.$nextTick();
+    expect(requestHandlers.createUserHandler).toHaveBeenCalledWith({
+      email: "some@email.tld",
+      locale: "en_US",
+      moderation: "",
+      password: "somepassword",
+    });
+    await flushPromises();
+    expect(wrapper.find("form").exists()).toBe(false);
+  });
+
+  it("shows error without moderation email", async () => {
+    const wrapper = generateWrapper(false, {
+      createUserHandler: vi.fn().mockResolvedValue({
+        errors: [{ field: "email", message: ["Bad email."] }],
+      }),
+    });
+    expect(wrapper.find("form").exists()).toBe(true);
+    wrapper
+      .findAll('input[type="password"')
+      .forEach((inputField) => inputField.setValue("my password"));
+    wrapper.find("form").trigger("submit");
+    await wrapper.vm.$nextTick();
+    expect(requestHandlers.createUserHandler).toBeCalledTimes(1);
+    expect(requestHandlers.createUserHandler).toHaveBeenCalledWith({
+      email: "",
+      locale: "en_US",
+      moderation: "",
+      password: "my password",
+    });
+    await flushPromises();
+    expect(wrapper.find("form").exists()).toBe(true);
+    expect(wrapper.find(".o-field__message-danger").text()).toContain(
+      "Bad email."
+    );
+  });
+
+  it("shows error without moderation password", async () => {
+    const wrapper = generateWrapper(false, {
+      createUserHandler: vi.fn().mockResolvedValue({
+        errors: [{ field: "password", message: ["Bad password."] }],
+      }),
+    });
+    expect(wrapper.find("form").exists()).toBe(true);
+    wrapper
+      .findAll('input[type="password"')
+      .forEach((inputField) => inputField.setValue("my password"));
+    wrapper.find("form").trigger("submit");
+    await wrapper.vm.$nextTick();
+    expect(requestHandlers.createUserHandler).toBeCalledTimes(1);
+    expect(requestHandlers.createUserHandler).toHaveBeenCalledWith({
+      email: "",
+      locale: "en_US",
+      moderation: "",
+      password: "my password",
+    });
+    await flushPromises();
+    expect(wrapper.find("form").exists()).toBe(true);
+    expect(wrapper.find(".o-field__message-danger").text()).toContain(
+      "Bad password."
+    );
+  });
+
+  it("register with moderation", async () => {
+    const wrapper = generateWrapper(true);
+    expect(wrapper.router).toBe(router);
+    await flushPromises();
+    expect(wrapper.html()).toMatchSnapshot();
+    expect(wrapper.find("form").exists()).toBe(true);
+    wrapper.find('form input[type="email"]').setValue("some@email.tld");
+    wrapper.find('form input[type="password"]').setValue("somepassword");
+    wrapper.find("form").trigger("submit");
+    await wrapper.vm.$nextTick();
+    expect(requestHandlers.createUserHandler).toHaveBeenCalledWith({
+      email: "some@email.tld",
+      locale: "en_US",
+      moderation: "",
+      password: "somepassword",
+    });
+    await flushPromises();
+    expect(wrapper.find("form").exists()).toBe(false);
+  });
+
+  it("shows error with moderation", async () => {
+    const wrapper = generateWrapper(true, {
+      createUserHandler: vi.fn().mockResolvedValue({
+        errors: [{ field: "moderation", message: ["Bad moderation."] }],
+      }),
+    });
+    expect(wrapper.find("form").exists()).toBe(true);
+    wrapper
+      .findAll('input[type="password"')
+      .forEach((inputField) => inputField.setValue("my password"));
+    wrapper.find("form").trigger("submit");
+    await wrapper.vm.$nextTick();
+    expect(requestHandlers.createUserHandler).toBeCalledTimes(1);
+    expect(requestHandlers.createUserHandler).toHaveBeenCalledWith({
+      email: "",
+      locale: "en_US",
+      moderation: "",
+      password: "my password",
+    });
+    await flushPromises();
+    expect(wrapper.find("form").exists()).toBe(true);
+    expect(wrapper.find(".o-field__message-danger").text()).toContain(
+      "Bad moderation."
+    );
+  });
+});
diff --git a/tests/unit/specs/components/User/__snapshots__/RegisterView.spec.ts.snap b/tests/unit/specs/components/User/__snapshots__/RegisterView.spec.ts.snap
new file mode 100644
index 000000000..067399f39
--- /dev/null
+++ b/tests/unit/specs/components/User/__snapshots__/RegisterView.spec.ts.snap
@@ -0,0 +1,158 @@
+// Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
+
+exports[`Register page > register with moderation 1`] = `
+"<div class="container mx-auto py-6">
+  <section class="">
+    <h1>Register an account on Mobilizon!</h1>
+    <p><b>Mobilizon</b> is an instance of the <a href="https://mobilizon.org" target="_blank" class="out">Mobilizon</a> software.</p>
+  </section>
+  <section class="flex flex-wrap gap-6">
+    <div class="">
+      <div class="my-4">
+        <h2 class="text-xl">Why create an account?</h2>
+        <div class="prose dark:prose-invert">
+          <ul>
+            <li>To create and manage your events</li>
+            <li>To create and manage multiples identities from a same account</li>
+            <li>To register for an event by choosing one of your identities</li>
+            <li>To create or join an group and start organizing with other people</li>
+            <li>To follow groups and be informed of their latest events</li>
+          </ul>
+        </div>
+      </div>
+      <router-link-stub to="[object Object]" replace="false" custom="false" ariacurrentvalue="page" viewtransition="false" class="out block my-4"></router-link-stub>
+      <hr role="presentation">
+      <div class="my-4">
+        <h2 class="text-xl">About Mobilizon</h2>
+        <div class="prose dark:prose-invert">Mobilizon.fr est l'instance Mobilizon de Framasoft.</div>
+        <p>Please read the <router-link-stub to="[object Object]" replace="false" custom="false" ariacurrentvalue="page" viewtransition="false" class="out"></router-link-stub> published by <b>Mobilizon</b>'s administrators.</p>
+      </div>
+    </div>
+    <div>
+      <!--v-if-->
+      <form>
+        <div data-oruga="field" class="o-field"><label for="email" class="o-field__label">Email</label>
+          <div class="o-field__body">
+            <div class="o-field o-field--addons">
+              <div data-oruga="input" class="o-input__wrapper o-input__wrapper--expanded"><input aria-required="true" required="" id="email" data-oruga-input="email" type="email" class="o-input" autocomplete="off">
+                <!---->
+                <!---->
+                <!---->
+              </div>
+            </div>
+          </div>
+          <!---->
+        </div>
+        <div data-oruga="field" class="o-field"><label for="password" class="o-field__label">Password</label>
+          <div class="o-field__body">
+            <div class="o-field o-field--addons">
+              <div data-oruga="input" class="o-input__wrapper o-input__wrapper--expanded o-input__wrapper--has-icon-right"><input aria-required="true" required="" minlength="6" id="password" data-oruga-input="password" type="password" class="o-input o-input--iconspace-right" autocomplete="off">
+                <!----><span class="o-icon o-icon--clickable o-input__icon-right" data-oruga="icon"><i class="mdi mdi-eye mdi-24px"></i></span>
+                <!---->
+              </div>
+            </div>
+          </div>
+          <!---->
+        </div>
+        <div data-oruga="field" class="o-field"><label for="moderation" class="o-field__label">Registration is subject to moderation, indicate your motivation.</label>
+          <div class="o-field__body">
+            <div class="o-field o-field--addons">
+              <div data-oruga="input" class="o-input__wrapper o-input__wrapper--expanded"><textarea aria-required="true" required="" id="moderation" data-oruga-input="textarea" class="o-input o-input__textarea"></textarea>
+                <!---->
+                <!---->
+                <!---->
+              </div>
+            </div>
+          </div>
+          <!---->
+        </div>
+        <div class="flex items-start mb-6 mt-2">
+          <div class="flex items-center h-5"><input type="checkbox" id="accept_rules_terms" class="w-4 h-4 bg-gray-50 rounded border border-gray-300 focus:ring-3 focus:ring-blue-300 dark:bg-gray-700 dark:border-gray-600 dark:focus:ring-blue-600 dark:ring-offset-gray-800" required=""></div><label for="accept_rules_terms" class="ml-2 text-gray-900 dark:text-gray-300"><span>I agree to the <router-link-stub to="[object Object]" replace="false" custom="false" ariacurrentvalue="page" viewtransition="false" class="out"></router-link-stub> and <router-link-stub to="[object Object]" replace="false" custom="false" ariacurrentvalue="page" viewtransition="false" class="out"></router-link-stub></span></label>
+        </div>
+        <p><button type="submit" class="o-btn o-btn--large o-btn--primary" role="button" data-oruga="button"><span class="o-btn__wrapper"><!----><span class="o-btn__label">Create an account</span>
+            <!----></span>
+          </button></p>
+        <p class="my-6">
+          <router-link-stub class="o-btn o-btn--text" role="button" data-oruga="button" to="[object Object]"></router-link-stub>
+          <router-link-stub class="o-btn o-btn--text" role="button" data-oruga="button" to="[object Object]"></router-link-stub>
+        </p>
+        <hr role="presentation">
+        <!--v-if-->
+      </form>
+    </div>
+  </section>
+</div>"
+`;
+
+exports[`Register page > register without moderation 1`] = `
+"<div class="container mx-auto py-6">
+  <section class="">
+    <h1>Register an account on Mobilizon!</h1>
+    <p><b>Mobilizon</b> is an instance of the <a href="https://mobilizon.org" target="_blank" class="out">Mobilizon</a> software.</p>
+  </section>
+  <section class="flex flex-wrap gap-6">
+    <div class="">
+      <div class="my-4">
+        <h2 class="text-xl">Why create an account?</h2>
+        <div class="prose dark:prose-invert">
+          <ul>
+            <li>To create and manage your events</li>
+            <li>To create and manage multiples identities from a same account</li>
+            <li>To register for an event by choosing one of your identities</li>
+            <li>To create or join an group and start organizing with other people</li>
+            <li>To follow groups and be informed of their latest events</li>
+          </ul>
+        </div>
+      </div>
+      <router-link-stub to="[object Object]" replace="false" custom="false" ariacurrentvalue="page" viewtransition="false" class="out block my-4"></router-link-stub>
+      <hr role="presentation">
+      <div class="my-4">
+        <h2 class="text-xl">About Mobilizon</h2>
+        <div class="prose dark:prose-invert">Mobilizon.fr est l'instance Mobilizon de Framasoft.</div>
+        <p>Please read the <router-link-stub to="[object Object]" replace="false" custom="false" ariacurrentvalue="page" viewtransition="false" class="out"></router-link-stub> published by <b>Mobilizon</b>'s administrators.</p>
+      </div>
+    </div>
+    <div>
+      <!--v-if-->
+      <form>
+        <div data-oruga="field" class="o-field"><label for="email" class="o-field__label">Email</label>
+          <div class="o-field__body">
+            <div class="o-field o-field--addons">
+              <div data-oruga="input" class="o-input__wrapper o-input__wrapper--expanded"><input aria-required="true" required="" id="email" data-oruga-input="email" type="email" class="o-input" autocomplete="off">
+                <!---->
+                <!---->
+                <!---->
+              </div>
+            </div>
+          </div>
+          <!---->
+        </div>
+        <div data-oruga="field" class="o-field"><label for="password" class="o-field__label">Password</label>
+          <div class="o-field__body">
+            <div class="o-field o-field--addons">
+              <div data-oruga="input" class="o-input__wrapper o-input__wrapper--expanded o-input__wrapper--has-icon-right"><input aria-required="true" required="" minlength="6" id="password" data-oruga-input="password" type="password" class="o-input o-input--iconspace-right" autocomplete="off">
+                <!----><span class="o-icon o-icon--clickable o-input__icon-right" data-oruga="icon"><i class="mdi mdi-eye mdi-24px"></i></span>
+                <!---->
+              </div>
+            </div>
+          </div>
+          <!---->
+        </div>
+        <!--v-if-->
+        <div class="flex items-start mb-6 mt-2">
+          <div class="flex items-center h-5"><input type="checkbox" id="accept_rules_terms" class="w-4 h-4 bg-gray-50 rounded border border-gray-300 focus:ring-3 focus:ring-blue-300 dark:bg-gray-700 dark:border-gray-600 dark:focus:ring-blue-600 dark:ring-offset-gray-800" required=""></div><label for="accept_rules_terms" class="ml-2 text-gray-900 dark:text-gray-300"><span>I agree to the <router-link-stub to="[object Object]" replace="false" custom="false" ariacurrentvalue="page" viewtransition="false" class="out"></router-link-stub> and <router-link-stub to="[object Object]" replace="false" custom="false" ariacurrentvalue="page" viewtransition="false" class="out"></router-link-stub></span></label>
+        </div>
+        <p><button type="submit" class="o-btn o-btn--large o-btn--primary" role="button" data-oruga="button"><span class="o-btn__wrapper"><!----><span class="o-btn__label">Create an account</span>
+            <!----></span>
+          </button></p>
+        <p class="my-6">
+          <router-link-stub class="o-btn o-btn--text" role="button" data-oruga="button" to="[object Object]"></router-link-stub>
+          <router-link-stub class="o-btn o-btn--text" role="button" data-oruga="button" to="[object Object]"></router-link-stub>
+        </p>
+        <hr role="presentation">
+        <!--v-if-->
+      </form>
+    </div>
+  </section>
+</div>"
+`;