diff --git a/src/Mail/Client/Folder/MailFolderChildList.php b/src/Mail/Client/Folder/MailFolderChildList.php
index 30e46f57..25be7610 100644
--- a/src/Mail/Client/Folder/MailFolderChildList.php
+++ b/src/Mail/Client/Folder/MailFolderChildList.php
@@ -52,7 +52,7 @@
  *
  * @package Conjoon\Mail\Client\Folder
  */
-class MailFolderChildList extends AbstractList implements Arrayable
+class MailFolderChildList extends AbstractList implements Arrayable, Jsonable
 {
 // -------------------------
 //  AbstractList
@@ -68,7 +68,7 @@ public function getEntityType(): string
 
 
 // -------------------------
-//  Jsonable
+//  Arrayable, Jsonable
 // -------------------------
 
     /**
@@ -83,7 +83,26 @@ public function toArray(): array
             $data[] = $mailFolder->toArray();
         }
 
+        return $data;
+    }
+
+
+    /**
+     * @inheritdoc
+     */
+    public function toJson(JsonStrategy $jsonStrategy = null): array
+    {
+        $data = [];
+
+        foreach ($this->data as $mailFolder) {
+            $data[] = $jsonStrategy
+                        ? $jsonStrategy->toJson($mailFolder)
+                        : $mailFolder->toArray();
+        }
 
         return $data;
     }
+
+
+
 }
diff --git a/tests/Mail/Client/Data/MailAccountTest.php b/tests/Mail/Client/Data/MailAccountTest.php
index 6a6bb5ce..519ea963 100644
--- a/tests/Mail/Client/Data/MailAccountTest.php
+++ b/tests/Mail/Client/Data/MailAccountTest.php
@@ -159,9 +159,6 @@ public function testToJson()
             ->willReturn($account->toArray());
 
         $this->assertEquals($config, $account->toJson($strategyMock));
-
-
-
     }
 
 
diff --git a/tests/Mail/Client/Folder/MailFolderChildListTest.php b/tests/Mail/Client/Folder/MailFolderChildListTest.php
index 9560c968..f17152d6 100644
--- a/tests/Mail/Client/Folder/MailFolderChildListTest.php
+++ b/tests/Mail/Client/Folder/MailFolderChildListTest.php
@@ -34,6 +34,8 @@
 use Conjoon\Mail\Client\Folder\MailFolderChildList;
 use Conjoon\Util\AbstractList;
 use Conjoon\Util\Arrayable;
+use Conjoon\Util\Jsonable;
+use Conjoon\Util\JsonStrategy;
 use Tests\TestCase;
 
 /**
@@ -55,6 +57,7 @@ public function testClass()
         $mailFolderChildList = new MailFolderChildList();
         $this->assertInstanceOf(AbstractList::class, $mailFolderChildList);
         $this->assertInstanceOf(Arrayable::class, $mailFolderChildList);
+        $this->assertInstanceOf(Jsonable::class, $mailFolderChildList);
 
         $this->assertSame(MailFolder::class, $mailFolderChildList->getEntityType());
     }
@@ -93,4 +96,52 @@ public function testToArray()
             "data" => []
         ]], $mailFolderChildList->toArray());
     }
+
+
+    /**
+     * Tests constructor
+     */
+    public function testToJson()
+    {
+
+        $data = [
+            "name" => "INBOX",
+            "unreadMessages" => 5,
+            "totalMessages" => 10,
+            "folderType" => MailFolder::TYPE_INBOX
+        ];
+
+        $folder = new MailFolder(
+            new FolderKey("dev", "INBOX"),
+            $data
+        );
+
+        $mailFolderChildList = new MailFolderChildList();
+
+        $mailFolderChildList[] = $folder;
+
+        $this->assertEquals(
+            $mailFolderChildList->toArray(),
+            $mailFolderChildList->toJson()
+        );
+
+        // w/ strategy
+
+
+
+        $strategyMock =
+            $this->getMockBuilder(JsonStrategy::class)
+                ->getMockForAbstractClass();
+
+        $strategyMock
+            ->expects($this->exactly(1))
+            ->method("toJson")
+            ->with($folder)
+            ->willReturn($folder->toArray());
+
+        $this->assertEquals($folder->toArray(), $folder->toJson($strategyMock));
+
+
+    }
+
 }