diff --git a/apps/signup-form/src/Preview.stories.tsx b/apps/signup-form/src/Preview.stories.tsx
index 3274bed9da..9463dcd5f0 100644
--- a/apps/signup-form/src/Preview.stories.tsx
+++ b/apps/signup-form/src/Preview.stories.tsx
@@ -45,6 +45,13 @@ const Preview: React.FC<SignupFormOptions & {
                 }
 
                 return;
+            },
+            getIntegrityToken: async () => {
+                await new Promise((resolve) => {
+                    setTimeout(resolve, 500);
+                });
+
+                return 'testtoken';
             }
         },
         t: i18n.t,
diff --git a/apps/signup-form/src/components/pages/FormPage.tsx b/apps/signup-form/src/components/pages/FormPage.tsx
index 608e04746c..453ae3c3f5 100644
--- a/apps/signup-form/src/components/pages/FormPage.tsx
+++ b/apps/signup-form/src/components/pages/FormPage.tsx
@@ -21,7 +21,8 @@ export const FormPage: React.FC = () => {
         setLoading(true);
 
         try {
-            await api.sendMagicLink({email, labels: options.labels});
+            const integrityToken = await api.getIntegrityToken();
+            await api.sendMagicLink({email, labels: options.labels, integrityToken});
 
             if (minimal) {
                 // Don't go to the success page, but show the success state in the form
diff --git a/apps/signup-form/src/utils/api.tsx b/apps/signup-form/src/utils/api.tsx
index 65dc51733f..4485c976c6 100644
--- a/apps/signup-form/src/utils/api.tsx
+++ b/apps/signup-form/src/utils/api.tsx
@@ -12,14 +12,31 @@ export const setupGhostApi = ({siteUrl}: {siteUrl: string}) => {
     }
 
     return {
-        sendMagicLink: async ({email, labels}: {email: string, labels: string[]}) => {
+        getIntegrityToken: async (): Promise<string> => {
+            const url = endpointFor({type: 'members', resource: 'integrity-token'});
+
+            const response = await fetch(url, {
+                headers: {
+                    'app-pragma': 'no-cache',
+                    'x-ghost-version': '5.90'
+                }
+            });
+
+            if (response.status < 200 || response.status >= 300) {
+                throw new Error(response.statusText);
+            }
+
+            return response.text();
+        },
+        sendMagicLink: async ({email, integrityToken, labels}: {email: string, labels: string[], integrityToken: string}) => {
             const url = endpointFor({type: 'members', resource: 'send-magic-link'});
 
             const payload = JSON.stringify({
                 email,
                 emailType: 'signup',
                 labels,
-                urlHistory: getUrlHistory({siteUrl})
+                urlHistory: getUrlHistory({siteUrl}),
+                integrityToken
             });
 
             const response = await fetch(url, {
diff --git a/apps/signup-form/test/utils/e2e.ts b/apps/signup-form/test/utils/e2e.ts
index 92d3d54a9a..b8ac0e35da 100644
--- a/apps/signup-form/test/utils/e2e.ts
+++ b/apps/signup-form/test/utils/e2e.ts
@@ -65,5 +65,9 @@ export async function mockApi({page, status = 200}: {page: any, status?: number}
         await route.abort('addressunreachable');
     });
 
+    await page.route(`${MOCKED_SITE_URL}/members/api/integrity-token/`, async (route) => {
+        await route.fulfill('testtoken');
+    });
+
     return lastApiRequest;
 }