diff --git a/app/Maildispatcher/Data/MailEntry.php b/app/Maildispatcher/Data/MailEntry.php
index b93d9777..e54c7a3d 100644
--- a/app/Maildispatcher/Data/MailEntry.php
+++ b/app/Maildispatcher/Data/MailEntry.php
@@ -8,5 +8,6 @@ class MailEntry extends Data
 {
     public function __construct(public string $email)
     {
+        $this->email = strtolower($email);
     }
 }
diff --git a/tests/Feature/Maildispatcher/StoreTest.php b/tests/Feature/Maildispatcher/StoreTest.php
index 6fdd1ebe..47b850be 100644
--- a/tests/Feature/Maildispatcher/StoreTest.php
+++ b/tests/Feature/Maildispatcher/StoreTest.php
@@ -3,6 +3,7 @@
 namespace Tests\Feature\Maildispatcher;
 
 use App\Activity;
+use App\Maildispatcher\Models\Localmaildispatcher;
 use App\Maildispatcher\Models\Maildispatcher;
 use App\Mailgateway\Models\Mailgateway;
 use App\Mailgateway\Types\LocalType;
@@ -48,4 +49,18 @@ class StoreTest extends TestCase
             'to' => 'jane@example.com',
         ]);
     }
+
+    public function testMaildispatcherReceivesLowerVersionOfEmail(): void
+    {
+        $gateway = Mailgateway::factory()->type(LocalType::class, [])->create();
+        Member::factory()->defaults()->create(['email' => 'Jane@example.com']);
+
+        $this->postJson('/maildispatcher', [
+            'name' => 'test',
+            'gateway_id' => $gateway->id,
+            'filter' => [],
+        ]);
+
+        $this->assertEquals('jane@example.com', Localmaildispatcher::first()->to);
+    }
 }