diff --git a/lib/features/mailbox/domain/extensions/mailbox_name_extension.dart b/lib/features/mailbox/domain/extensions/mailbox_name_extension.dart
index 55d27ec0b..161588578 100644
--- a/lib/features/mailbox/domain/extensions/mailbox_name_extension.dart
+++ b/lib/features/mailbox/domain/extensions/mailbox_name_extension.dart
@@ -1,5 +1,10 @@
 import 'package:jmap_dart_client/jmap/mail/mailbox/mailbox.dart';
 
 extension MailboxNameExtension on MailboxName {
-  int compareToSort(MailboxName mailboxName) => name.compareTo(mailboxName.name);
+  int compareAlphabetically(MailboxName? other) {
+    if (other == null) {
+      return 1;
+    }
+    return name.toLowerCase().compareTo(other.name.toLowerCase());
+  }
 }
\ No newline at end of file
diff --git a/lib/features/mailbox/presentation/mailbox_controller.dart b/lib/features/mailbox/presentation/mailbox_controller.dart
index 1c13233d9..b8b129144 100644
--- a/lib/features/mailbox/presentation/mailbox_controller.dart
+++ b/lib/features/mailbox/presentation/mailbox_controller.dart
@@ -10,8 +10,8 @@ import 'package:jmap_dart_client/jmap/mail/mailbox/mailbox.dart';
 import 'package:model/mailbox/presentation_mailbox.dart';
 import 'package:model/mailbox/select_mode.dart';
 import 'package:tmail_ui_user/features/base/base_controller.dart';
-import 'package:tmail_ui_user/features/mailbox/domain/constants/mailbox_constants.dart';
 import 'package:tmail_ui_user/features/login/domain/usecases/delete_credential_interactor.dart';
+import 'package:tmail_ui_user/features/mailbox/domain/constants/mailbox_constants.dart';
 import 'package:tmail_ui_user/features/mailbox/domain/state/get_all_mailboxes_state.dart';
 import 'package:tmail_ui_user/features/mailbox/domain/usecases/get_all_mailbox_interactor.dart';
 import 'package:tmail_ui_user/features/mailbox/presentation/model/mailbox_node.dart';
diff --git a/lib/features/mailbox/presentation/mailbox_view.dart b/lib/features/mailbox/presentation/mailbox_view.dart
index 5f85d5c87..892de3167 100644
--- a/lib/features/mailbox/presentation/mailbox_view.dart
+++ b/lib/features/mailbox/presentation/mailbox_view.dart
@@ -1,4 +1,3 @@
-import 'package:built_collection/built_collection.dart';
 import 'package:core/core.dart';
 import 'package:core/presentation/extensions/color_extension.dart';
 import 'package:core/presentation/resources/image_paths.dart';
@@ -10,7 +9,6 @@ import 'package:model/model.dart';
 import 'package:tmail_ui_user/features/mailbox/domain/state/get_all_mailboxes_state.dart';
 import 'package:tmail_ui_user/features/mailbox/presentation/mailbox_controller.dart';
 import 'package:tmail_ui_user/features/mailbox/presentation/model/mailbox_node.dart';
-import 'package:tmail_ui_user/features/mailbox/presentation/model/mailbox_tree.dart';
 import 'package:tmail_ui_user/features/mailbox/presentation/widgets/mailbox_button_new_folder_builder.dart';
 import 'package:tmail_ui_user/features/mailbox/presentation/widgets/mailbox_folder_tile_builder.dart';
 import 'package:tmail_ui_user/features/mailbox/presentation/widgets/mailbox_tile_builder.dart';
@@ -154,10 +152,7 @@ class MailboxView extends GetWidget<MailboxController> {
             .addName(AppLocalizations.of(context).new_folder)
             .build()
         ),
-        Obx(() => controller.folderMailboxTree.value.root.childrenItems.isNotEmpty
-            ? _buildFolderMailbox(context, controller.folderMailboxTree.value)
-            : SizedBox.shrink()
-        ),
+        _buildFolderMailbox(context),
       ]
     );
   }
@@ -180,19 +175,22 @@ class MailboxView extends GetWidget<MailboxController> {
           .build()));
   }
 
-  Widget _buildFolderMailbox(BuildContext context, MailboxTree mailboxTree) {
-    return Transform(
-      transform: Matrix4.translationValues(responsiveUtils.isMobile(context) ? 0.0 : -15.0, 0.0, 0.0),
-      child: Padding(
-        padding: EdgeInsets.only(left: 4, right: 16),
-        child: TreeView(
-          startExpanded: false,
-          key: Key('folder_mailbox_list'),
-          children: _buildListChildTileWidget(context, mailboxTree.root.childrenItems)))
+  Widget _buildFolderMailbox(BuildContext context) {
+    return Obx(() => controller.folderMailboxTree.value.root.hasChildren()
+        ? Transform(
+            transform: Matrix4.translationValues(responsiveUtils.isMobile(context) ? 0.0 : -15.0, 0.0, 0.0),
+            child: Padding(
+              padding: EdgeInsets.only(left: 4, right: 16),
+              child: TreeView(
+                startExpanded: false,
+                key: Key('folder_mailbox_list'),
+                children: _buildListChildTileWidget(context, controller.folderMailboxTree.value.root.childrenItems!)))
+          )
+        : SizedBox.shrink()
     );
   }
 
-  List<Widget> _buildListChildTileWidget(BuildContext context, BuiltList<MailboxNode> listMailboxNode) {
+  List<Widget> _buildListChildTileWidget(BuildContext context, List<MailboxNode> listMailboxNode) {
     return listMailboxNode
       .map((mailboxNode) => mailboxNode.hasChildren()
         ? Padding(
@@ -206,7 +204,7 @@ class MailboxView extends GetWidget<MailboxController> {
                     mailboxNode,
                     controller.getSelectMode(mailboxNode.item, controller.mailboxDashBoardController.selectedMailbox.value))
                 .build(context)),
-              children: _buildListChildTileWidget(context, mailboxNode.childrenItems)))
+              children: _buildListChildTileWidget(context, mailboxNode.childrenItems!)))
         : Padding(
             padding: EdgeInsets.only(left: 16),
             child: GestureDetector(
diff --git a/lib/features/mailbox/presentation/model/mailbox_tree_builder.dart b/lib/features/mailbox/presentation/model/mailbox_tree_builder.dart
index 5b75f61f7..ea523a206 100644
--- a/lib/features/mailbox/presentation/model/mailbox_tree_builder.dart
+++ b/lib/features/mailbox/presentation/model/mailbox_tree_builder.dart
@@ -1,7 +1,9 @@
 import 'dart:collection';
+import 'package:collection/collection.dart';
 
 import 'package:jmap_dart_client/jmap/mail/mailbox/mailbox.dart';
 import 'package:model/mailbox/presentation_mailbox.dart';
+import 'package:tmail_ui_user/features/mailbox/domain/extensions/mailbox_name_extension.dart';
 
 import 'mailbox_node.dart';
 import 'mailbox_tree.dart';
@@ -21,8 +23,16 @@ class TreeBuilder {
       if (node != null) {
         if (parentNode != null) {
           parentNode.addChildNode(node);
+          parentNode.childrenItems?.sortByCompare<MailboxName?>(
+            (node) => node.item.name,
+            (name, other) => name?.compareAlphabetically(other) ?? -1
+          );
         } else {
           tree.root.addChildNode(node);
+          tree.root.childrenItems?.sortByCompare<MailboxName?>(
+            (node) => node.item.name,
+            (name, other) => name?.compareAlphabetically(other) ?? -1
+          );
         }
       }
     });
diff --git a/pubspec.yaml b/pubspec.yaml
index fcc1244b1..ae2c8d1ba 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -83,6 +83,8 @@ dependencies:
   # http_parser
   http_parser: 4.0.0
 
+  collection: 1.15.0
+
   # file_size
   filesize: 2.0.1
 
diff --git a/test/features/mailbox/presentation/model/mailbox_tree_builder_test.dart b/test/features/mailbox/presentation/model/mailbox_tree_builder_test.dart
index 40364837a..395e508f3 100644
--- a/test/features/mailbox/presentation/model/mailbox_tree_builder_test.dart
+++ b/test/features/mailbox/presentation/model/mailbox_tree_builder_test.dart
@@ -13,46 +13,46 @@ void main() {
         PresentationMailbox(MailboxId(Id('root'))),
         childrenItems: [
           MailboxNode(
-            PresentationMailbox(MailboxId(Id("1")), parentId: null),
-            childrenItems: [
-              MailboxNode(PresentationMailbox(MailboxId(Id("1_1")), parentId: MailboxId(Id('1')))),
-              MailboxNode(
-                PresentationMailbox(MailboxId(Id("1_2")), parentId: MailboxId(Id('1'))),
-                childrenItems: [
-                  MailboxNode(PresentationMailbox(MailboxId(Id("1_2_1")), parentId: MailboxId(Id('1_2'))))
-                ]
-              ),
-            ]
+              PresentationMailbox(MailboxId(Id("3")), parentId: null),
+              childrenItems: [
+                MailboxNode(
+                    PresentationMailbox(MailboxId(Id("3_2")), parentId: MailboxId(Id('3'))),
+                    childrenItems: [MailboxNode(PresentationMailbox(MailboxId(Id("3_2_1")), parentId: MailboxId(Id('3_2'))))]
+                ),
+                MailboxNode(
+                    PresentationMailbox(MailboxId(Id("3_1")), parentId: MailboxId(Id('3'))),
+                    childrenItems: [
+                      MailboxNode(PresentationMailbox(MailboxId(Id("3_1_1")), parentId: MailboxId(Id('3_1'))))
+                    ]
+                ),
+              ]
           ),
           MailboxNode(
-            PresentationMailbox(MailboxId(Id("2")), parentId: null),
-            childrenItems: [
-              MailboxNode(PresentationMailbox(MailboxId(Id("2_1")), parentId: MailboxId(Id('2'))),
-                childrenItems: [
-                  MailboxNode(
-                    PresentationMailbox(MailboxId(Id("2_1_1")), parentId: MailboxId(Id('2_1'))),
-                    childrenItems: [MailboxNode(PresentationMailbox(MailboxId(Id("2_1_1_1")), parentId: MailboxId(Id('2_1_1'))))]
-                  ),
-                  MailboxNode(PresentationMailbox(MailboxId(Id("2_1_2")), parentId: MailboxId(Id('2_1'))))
-                ]
-              ),
-              MailboxNode(PresentationMailbox(MailboxId(Id("2_2")), parentId: MailboxId(Id('2'))))
-            ]
+              PresentationMailbox(MailboxId(Id("1")), parentId: null),
+              childrenItems: [
+                MailboxNode(
+                    PresentationMailbox(MailboxId(Id("1_2")), parentId: MailboxId(Id('1'))),
+                    childrenItems: [
+                      MailboxNode(PresentationMailbox(MailboxId(Id("1_2_1")), parentId: MailboxId(Id('1_2'))))
+                    ]
+                ),
+                MailboxNode(PresentationMailbox(MailboxId(Id("1_1")), parentId: MailboxId(Id('1')))),
+              ]
           ),
           MailboxNode(
-            PresentationMailbox(MailboxId(Id("3")), parentId: null),
-            childrenItems: [
-              MailboxNode(
-                PresentationMailbox(MailboxId(Id("3_1")), parentId: MailboxId(Id('3'))),
-                childrenItems: [
-                  MailboxNode(PresentationMailbox(MailboxId(Id("3_1_1")), parentId: MailboxId(Id('3_1'))))
-                ]
-              ),
-              MailboxNode(
-                PresentationMailbox(MailboxId(Id("3_2")), parentId: MailboxId(Id('3'))),
-                childrenItems: [MailboxNode(PresentationMailbox(MailboxId(Id("3_2_1")), parentId: MailboxId(Id('3_2'))))]
-              )
-            ]
+              PresentationMailbox(MailboxId(Id("2")), parentId: null),
+              childrenItems: [
+                MailboxNode(PresentationMailbox(MailboxId(Id("2_2")), parentId: MailboxId(Id('2')))),
+                MailboxNode(PresentationMailbox(MailboxId(Id("2_1")), parentId: MailboxId(Id('2'))),
+                    childrenItems: [
+                      MailboxNode(PresentationMailbox(MailboxId(Id("2_1_2")), parentId: MailboxId(Id('2_1')))),
+                      MailboxNode(
+                          PresentationMailbox(MailboxId(Id("2_1_1")), parentId: MailboxId(Id('2_1'))),
+                          childrenItems: [MailboxNode(PresentationMailbox(MailboxId(Id("2_1_1_1")), parentId: MailboxId(Id('2_1_1'))))]
+                      ),
+                    ]
+                ),
+              ]
           ),
         ]
       )