diff --git a/plugins/bc-mail/src/Controller/Admin/MailContentsController.php b/plugins/bc-mail/src/Controller/Admin/MailContentsController.php
index 75d4da3a1f..b7037715ae 100644
--- a/plugins/bc-mail/src/Controller/Admin/MailContentsController.php
+++ b/plugins/bc-mail/src/Controller/Admin/MailContentsController.php
@@ -55,6 +55,7 @@ public function initialize(): void
      * @param int ブログコンテンツID
      * @checked
      * @noTodo
+     * @unitTest
      */
     public function edit(MailContentsAdminServiceInterface $service, int $id)
     {
diff --git a/plugins/bc-mail/tests/TestCase/Controller/Admin/MailContentsControllerTest.php b/plugins/bc-mail/tests/TestCase/Controller/Admin/MailContentsControllerTest.php
index d67bbbcb5c..37ef521504 100644
--- a/plugins/bc-mail/tests/TestCase/Controller/Admin/MailContentsControllerTest.php
+++ b/plugins/bc-mail/tests/TestCase/Controller/Admin/MailContentsControllerTest.php
@@ -12,7 +12,6 @@
 
 namespace BcMail\Test\TestCase\Controller\Admin;
 
-use BaserCore\Test\Factory\ContentFactory;
 use BaserCore\Test\Scenario\InitAppScenario;
 use BaserCore\TestSuite\BcTestCase;
 use BaserCore\Utility\BcContainerTrait;
@@ -90,7 +89,23 @@ public function test_delete()
      */
     public function testAdmin_edit()
     {
-        $this->markTestIncomplete('このテストは、まだ実装されていません。');
+        $this->enableSecurityToken();
+        $this->enableCsrfToken();
+        //データーを生成
+        $mailContentServices = $this->getService(MailContentsServiceInterface::class);
+        //データを生成
+        $this->loadFixtureScenario(MailContentsScenario::class);
+        //Postデータを生成
+        $mailContent = $mailContentServices->get(1);
+        $mailContent->description = 'this is api edit';
+        //対象URLをコル
+        $this->post('/baser/admin/bc-mail/mail_contents/edit/1', $mailContent->toArray());
+        $this->assertResponseCode(302);
+        $this->assertFlashMessage('メールフォーム「お問い合わせ」を更新しました。');
+
+        //エラーを発生した場合
+        $this->post('/baser/admin/bc-mail/mail_contents/edit/222', $mailContent->toArray());
+        $this->assertResponseCode(404);
     }
 
     /**