diff --git a/database/migrations/2024_07_14_174642_create_formtemplates_mail_columns.php b/database/migrations/2024_07_14_174642_create_formtemplates_mail_columns.php
index 8e84b26f..a50139b0 100644
--- a/database/migrations/2024_07_14_174642_create_formtemplates_mail_columns.php
+++ b/database/migrations/2024_07_14_174642_create_formtemplates_mail_columns.php
@@ -2,6 +2,7 @@
 
 use Illuminate\Database\Migrations\Migration;
 use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\DB;
 use Illuminate\Support\Facades\Schema;
 
 return new class extends Migration
@@ -14,10 +15,25 @@ return new class extends Migration
     public function up()
     {
         Schema::table('forms', function (Blueprint $table) {
-            $table->json('description')->default(json_encode(['time' => 4, 'blocks' => [], 'version' => '1.0']))->change();
-            $table->json('mail_top')->default(json_encode(['time' => 4, 'blocks' => [], 'version' => '1.0']))->nullable(false)->change();
-            $table->json('mail_bottom')->default(json_encode(['time' => 4, 'blocks' => [], 'version' => '1.0']))->nullable(false)->change();
+            $table->json('description')->default($this->default())->change();
+            $table->json('mail_top')->default($this->default())->nullable(false)->change();
+            $table->json('mail_bottom')->default($this->default())->nullable(false)->change();
         });
+
+        foreach (DB::table('forms')->get() as $form) {
+            $mailTop = json_decode($form->mail_top, true);
+            if (!$mailTop || !count($mailTop)) {
+                DB::table('forms')->where('id', $form->id)->update(['mail_top' => $this->default()]);
+            }
+            $mailBottom = json_decode($form->mail_bottom, true);
+            if (!$mailBottom || !count($mailBottom)) {
+                DB::table('forms')->where('id', $form->id)->update(['mail_bottom' => $this->default()]);
+            }
+            $description = json_decode($form->description, true);
+            if (!$description || !count($description)) {
+                DB::table('forms')->where('id', $form->id)->update(['description' => $this->default()]);
+            }
+        }
     }
 
     /**
@@ -33,4 +49,9 @@ return new class extends Migration
             $table->json('mail_bottom')->default(null)->nullable(true)->change();
         });
     }
+
+    protected function default(): string
+    {
+        return json_encode(['time' => 4, 'blocks' => [], 'version' => '1.0']);
+    }
 };