diff --git a/frontend/src/routes/sponsor/register/stepPersonForm.tsx b/frontend/src/routes/sponsor/register/stepPersonForm.tsx
index e9c8f5a15160262a9647743ed9b7edac23fcd90c..a07b9510bd8113cdc5c9510a14e3dc1e53ae2960 100644
--- a/frontend/src/routes/sponsor/register/stepPersonForm.tsx
+++ b/frontend/src/routes/sponsor/register/stepPersonForm.tsx
@@ -131,6 +131,15 @@ const StepPersonForm = forwardRef(
 
     useImperativeHandle(ref, () => ({ doSubmit }))
 
+    // const checkDuplicateEmail = (email: String) => {
+    //   fetch(url til api).then((res) => {
+    //     if (res.toString() === email) {
+    //       return true
+    //     }
+    //     return false
+    //   })
+    // }
+
     const validateStartDateBeforeEndDate = (startDate: Date | undefined) => {
       if (!startDate) {
         return t('validation.startDateMustBeSet')
diff --git a/gregui/api/serializers/email.py b/gregui/api/serializers/email.py
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/gregui/api/views/email.py b/gregui/api/views/email.py
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391