diff --git a/modules/json_form_widget/src/StringHelper.php b/modules/json_form_widget/src/StringHelper.php
index d2ae0b0ea5..aa59262266 100644
--- a/modules/json_form_widget/src/StringHelper.php
+++ b/modules/json_form_widget/src/StringHelper.php
@@ -82,6 +82,7 @@ public function handleStringElement($definition, $data, $object_schema = FALSE)
     // Add extra validate if element type is email.
     if ($element['#type'] === 'email') {
       $element['#element_validate'][] = [$this, 'validateEmail'];
+      $element['#default_value'] = ltrim($element['#default_value'], 'mailto:');
     }
 
     return $element;
diff --git a/modules/json_form_widget/src/ValueHandler.php b/modules/json_form_widget/src/ValueHandler.php
index 025f80de43..ffb8f7c9f8 100644
--- a/modules/json_form_widget/src/ValueHandler.php
+++ b/modules/json_form_widget/src/ValueHandler.php
@@ -18,6 +18,9 @@ public function flattenValues($formValues, $property, $schema) {
     switch ($schema->type) {
       case 'string':
         $data = $this->handleStringValues($formValues, $property);
+        if ($property === 'hasEmail') {
+          $data = 'mailto:' . ltrim($data, 'mailto:');
+        }
         break;
 
       case 'object':