diff --git a/assets/templates/mattermost_build_test.yaml b/assets/templates/mattermost_build_test.yaml
new file mode 100644
index 0000000..cc6a55e
--- /dev/null
+++ b/assets/templates/mattermost_build_test.yaml
@@ -0,0 +1,21 @@
+---
+property:
+  workspace: .
+
+pipeline:
+  id: main
+  workflow:
+    - exe: mattermost-build
+
+commands:
+  - command: MattermostBuild
+    id: mattermost-build
+    param:
+      url: https://mattermost.toki-labs.com/api/v4/posts
+      token: 3zihstia4frodxgea7i91agbye
+      channelId: n78a1wrdwjydzdoat6gci8cphe
+      appName: oto_cli
+      type: ios
+      color: ED1458
+      version: 1.0.0-test
+      downloadURL: https://example.com/download/oto_cli.ipa
diff --git a/assets/templates/mattermost_test.yaml b/assets/templates/mattermost_test.yaml
new file mode 100644
index 0000000..92fff26
--- /dev/null
+++ b/assets/templates/mattermost_test.yaml
@@ -0,0 +1,22 @@
+---
+property:
+  workspace: .
+
+pipeline:
+  id: main
+  workflow:
+    - exe: mattermost
+
+commands:
+  - command: Mattermost
+    id: mattermost
+    param:
+      url: https://mattermost.toki-labs.com/api/v4/posts
+      token: 3zihstia4frodxgea7i91agbye
+      message:
+        channel_id: n78a1wrdwjydzdoat6gci8cphe
+        message: 봇 테스트 메시지입니다.
+        props:
+          attachments:
+            - pretext: Mattermost Bot Test
+              text: 정상적으로 전송되면 이 메시지가 채널에 표시됩니다.
diff --git a/assets/templates/mattermost_test_json.yaml b/assets/templates/mattermost_test_json.yaml
new file mode 100644
index 0000000..b9b9ab3
--- /dev/null
+++ b/assets/templates/mattermost_test_json.yaml
@@ -0,0 +1,28 @@
+---
+property:
+  workspace: .
+
+pipeline:
+  id: main
+  workflow:
+    - exe: mattermost
+
+commands:
+  - command: Mattermost
+    id: mattermost
+    param:
+      url: https://mattermost.toki-labs.com/api/v4/posts
+      token: 3zihstia4frodxgea7i91agbye
+      messageJson: |
+        {
+          "channel_id": "n78a1wrdwjydzdoat6gci8cphe",
+          "message": "봇 테스트 메시지입니다. (messageJson)",
+          "props": {
+            "attachments": [
+              {
+                "pretext": "Mattermost Bot Test",
+                "text": "정상적으로 전송되면 이 메시지가 채널에 표시됩니다. (messageJson)"
+              }
+            ]
+          }
+        }
diff --git a/assets/templates/mattermost_test_property.yaml b/assets/templates/mattermost_test_property.yaml
new file mode 100644
index 0000000..2b8a1ea
--- /dev/null
+++ b/assets/templates/mattermost_test_property.yaml
@@ -0,0 +1,29 @@
+---
+property:
+  workspace: .
+
+pipeline:
+  id: main
+  workflow:
+    - exe: set-payload
+    - exe: mattermost
+
+commands:
+  - command: SetValue
+    id: set-payload
+    param:
+      values-object:
+        mattermostPayload:
+          channel_id: n78a1wrdwjydzdoat6gci8cphe
+          message: 봇 테스트 메시지입니다. (property)
+          props:
+            attachments:
+              - pretext: Mattermost Bot Test
+                text: 정상적으로 전송되면 이 메시지가 채널에 표시됩니다. (property)
+
+  - command: Mattermost
+    id: mattermost
+    param:
+      url: https://mattermost.toki-labs.com/api/v4/posts
+      token: 3zihstia4frodxgea7i91agbye
+      property: <!property.mattermostPayload>
diff --git a/lib/oto/commands/command.dart b/lib/oto/commands/command.dart
index 8c1f3d1..50457a1 100644
--- a/lib/oto/commands/command.dart
+++ b/lib/oto/commands/command.dart
@@ -29,6 +29,7 @@ import 'package:oto_cli/oto/commands/jira/jira.dart';
 import 'package:oto_cli/oto/commands/process/process.dart';
 import 'package:oto_cli/oto/commands/proto/protobuf.dart';
 import 'package:oto_cli/oto/commands/util/json.dart';
+import 'package:oto_cli/oto/commands/util/mattermost.dart';
 import 'package:oto_cli/oto/commands/util/print.dart';
 import 'package:oto_cli/oto/commands/util/set_value.dart';
 import 'package:oto_cli/oto/commands/util/smb_authorize.dart';
@@ -83,6 +84,8 @@ enum CommandType {
   Slack,
   SlackFile,
   SlackBuild,
+  Mattermost,
+  MattermostBuild,
   StringSub,
   StringReplace,
   StringReplacePattern,
@@ -161,6 +164,8 @@ abstract class Command {
     CommandType.Slack: () => Slack(),
     CommandType.SlackFile: () => SlackFile(),
     CommandType.SlackBuild: () => SlackBuild(),
+    CommandType.Mattermost: () => Mattermost(),
+    CommandType.MattermostBuild: () => MattermostBuild(),
     CommandType.StringSub: () => StringSub(),
     CommandType.StringReplace: () => StringReplace(),
     CommandType.StringReplacePattern: () => StringReplacePattern(),
diff --git a/lib/oto/commands/util/mattermost.dart b/lib/oto/commands/util/mattermost.dart
new file mode 100644
index 0000000..02fec06
--- /dev/null
+++ b/lib/oto/commands/util/mattermost.dart
@@ -0,0 +1,97 @@
+// ignore_for_file: avoid_init_to_null
+
+import 'dart:async';
+
+import 'package:color/color.dart';
+import 'package:dart_framework/utils/system_util.dart';
+import 'package:oto_cli/oto/commands/command.dart';
+import 'package:oto_cli/oto/data/command_data.dart';
+import 'package:oto_cli/oto/utils/mattermost/mattermost_data.dart';
+import 'package:oto_cli/oto/utils/mattermost/mattermost_sender.dart';
+
+class Mattermost extends Command {
+  @override
+  Future execute(DataCommand command) async {
+    final data = DataMattermostSender.fromJson(getParam(command));
+    final sender = MattermostSender(data.token, data.url);
+
+    if (data.property != null) {
+      final value = data.property;
+      if (value is DataMattermost) {
+        await sender.sendData(value, defaultChannelId: data.channelId);
+      } else if (value is Map) {
+        await sender.sendMap(
+          DataMattermost.fromJson(Map<String, dynamic>.from(value))
+              .toPostJson(defaultChannelId: data.channelId),
+        );
+      } else {
+        throw Exception('The property must be DataMattermost or Map.');
+      }
+    } else if (data.message != null) {
+      final payload = Map<String, dynamic>.from(data.message!);
+      await sender.sendMap(
+          _replaceMentionsInMap(payload, data.idMap).cast<String, dynamic>());
+    } else if (data.messageJson != null) {
+      await sender.send(getName2ID(data.messageJson!, data.idMap));
+    } else {
+      throw Exception('property or message field should not be null');
+    }
+
+    return simpleFuture;
+  }
+
+  String getName2ID(String message, Map<String, String>? idMap) {
+    if (idMap == null) {
+      return message;
+    }
+
+    for (final entry in idMap.entries) {
+      message = message.replaceAll('@${entry.key}', '@${entry.value}');
+    }
+    return message;
+  }
+
+  dynamic _replaceMentionsInMap(dynamic value, Map<String, String>? idMap) {
+    if (idMap == null) {
+      return value;
+    }
+    if (value is String) {
+      var replaced = value;
+      for (final entry in idMap.entries) {
+        replaced = replaced.replaceAll('@${entry.key}', '@${entry.value}');
+      }
+      return replaced;
+    }
+    if (value is List) {
+      return value.map((item) => _replaceMentionsInMap(item, idMap)).toList();
+    }
+    if (value is Map) {
+      return value.map(
+          (key, item) => MapEntry(key, _replaceMentionsInMap(item, idMap)));
+    }
+    return value;
+  }
+}
+
+class MattermostBuild extends Command {
+  @override
+  Future execute(DataCommand command) async {
+    final data = DataMattermostBuild.fromJson(getParam(command));
+    final sender = MattermostSender(data.token, data.url);
+    final channelId = data.channelId;
+    if (channelId == null || channelId.isEmpty) {
+      throw Exception('channelId is required for MattermostBuild.');
+    }
+
+    await sender.sendBuild(
+      data.appName,
+      data.type,
+      Color.hex(data.color),
+      data.version,
+      data.downloadURL,
+      channelId: channelId,
+    );
+
+    return complete(0, command);
+  }
+}
diff --git a/lib/oto/core/defined_data.dart b/lib/oto/core/defined_data.dart
index 3a5fa14..5bd6109 100644
--- a/lib/oto/core/defined_data.dart
+++ b/lib/oto/core/defined_data.dart
@@ -149,6 +149,18 @@ commands:
 #    downloadURL: http://toki-labs.com/build/tplayer/android/tplayer_arm64_<!common.version>.apk
 #    channel: release
 
+#- command: Mattermost
+#  param:
+#    url: https://mattermost.example.com/api/v4/posts
+#    token: bot-token
+#    channelId: n78a1wrdwjydzdoat6gci8cphe
+#    message:
+#      message: 봇 테스트 메시지입니다.
+#      props:
+#        attachments:
+#        - pretext: Mattermost Bot Test
+#          text: 정상적으로 전송되면 이 메시지가 채널에 표시됩니다.
+
 ''';
     } else if (Platform.isWindows) {
       yaml = '''
@@ -269,6 +281,18 @@ commands:
 #    downloadURL: http://toki-labs.com/build/tplayer/android/tplayer_arm64_<!common.version>.apk
 #    channel: release
 
+#- command: Mattermost
+#  param:
+#    url: https://mattermost.example.com/api/v4/posts
+#    token: bot-token
+#    channelId: n78a1wrdwjydzdoat6gci8cphe
+#    message:
+#      message: 봇 테스트 메시지입니다.
+#      props:
+#        attachments:
+#        - pretext: Mattermost Bot Test
+#          text: 정상적으로 전송되면 이 메시지가 채널에 표시됩니다.
+
 ''';
     } else if (Platform.isLinux) {}
 
diff --git a/lib/oto/data/command_data.dart b/lib/oto/data/command_data.dart
index ccb5ff9..592d89e 100644
--- a/lib/oto/data/command_data.dart
+++ b/lib/oto/data/command_data.dart
@@ -7,6 +7,7 @@ import 'package:oto_cli/oto/commands/build/build_flutter.dart';
 import 'package:oto_cli/oto/commands/build/build_msbuild.dart';
 import 'package:oto_cli/oto/commands/command.dart';
 import 'package:oto_cli/oto/data/pipeline_data.dart';
+import 'package:oto_cli/oto/utils/mattermost/mattermost_sender.dart';
 part 'command_data.g.dart';
 
 /// ***************************** Base Data ****************************///
@@ -624,6 +625,42 @@ class DataSlackBuild extends DataSlackSender {
   Map<String, dynamic> toJson() => _$DataSlackBuildToJson(this);
 }
 
+//Mattermost
+@JsonSerializable()
+class DataMattermostSender extends DataParam {
+  DataMattermostSender();
+
+  late String token;
+  late String url;
+  late String? channelId;
+  late dynamic property;
+  late Map<String, dynamic>? message;
+  late String? messageJson;
+  late Map<String, String>? idMap;
+
+  factory DataMattermostSender.fromJson(Map<String, dynamic> json) =>
+      _$DataMattermostSenderFromJson(json);
+  @override
+  Map<String, dynamic> toJson() => _$DataMattermostSenderToJson(this);
+}
+
+//Mattermost Build
+@JsonSerializable()
+class DataMattermostBuild extends DataMattermostSender {
+  DataMattermostBuild();
+
+  late String appName;
+  late MattermostBuildType type;
+  late String color;
+  late String version;
+  late String downloadURL;
+
+  factory DataMattermostBuild.fromJson(Map<String, dynamic> json) =>
+      _$DataMattermostBuildFromJson(json);
+  @override
+  Map<String, dynamic> toJson() => _$DataMattermostBuildToJson(this);
+}
+
 //Jira
 @JsonSerializable()
 class DataJira extends DataParam {
diff --git a/lib/oto/data/command_data.g.dart b/lib/oto/data/command_data.g.dart
index a9de1e6..67919d9 100644
--- a/lib/oto/data/command_data.g.dart
+++ b/lib/oto/data/command_data.g.dart
@@ -88,6 +88,8 @@ const _$CommandTypeEnumMap = {
   CommandType.Slack: 'Slack',
   CommandType.SlackFile: 'SlackFile',
   CommandType.SlackBuild: 'SlackBuild',
+  CommandType.Mattermost: 'Mattermost',
+  CommandType.MattermostBuild: 'MattermostBuild',
   CommandType.StringSub: 'StringSub',
   CommandType.StringReplace: 'StringReplace',
   CommandType.StringReplacePattern: 'StringReplacePattern',
@@ -1117,6 +1119,97 @@ const _$SlackBuildTypeEnumMap = {
   SlackBuildType.web: 'web',
 };
 
+DataMattermostSender _$DataMattermostSenderFromJson(
+        Map<String, dynamic> json) =>
+    DataMattermostSender()
+      ..workspace = json['workspace'] as String?
+      ..passExitCodes = (json['passExitCodes'] as List<dynamic>?)
+          ?.map((e) => (e as num).toInt())
+          .toList()
+      ..setResult = json['setResult'] as String?
+      ..setExitCode = json['setExitCode'] as String?
+      ..showPrint = json['showPrint'] as bool?
+      ..token = json['token'] as String
+      ..url = json['url'] as String
+      ..channelId = json['channelId'] as String?
+      ..property = json['property']
+      ..message = json['message'] as Map<String, dynamic>?
+      ..messageJson = json['messageJson'] as String?
+      ..idMap = (json['idMap'] as Map<String, dynamic>?)?.map(
+        (k, e) => MapEntry(k, e as String),
+      );
+
+Map<String, dynamic> _$DataMattermostSenderToJson(
+        DataMattermostSender instance) =>
+    <String, dynamic>{
+      'workspace': instance.workspace,
+      'passExitCodes': instance.passExitCodes,
+      'setResult': instance.setResult,
+      'setExitCode': instance.setExitCode,
+      'showPrint': instance.showPrint,
+      'token': instance.token,
+      'url': instance.url,
+      'channelId': instance.channelId,
+      'property': instance.property,
+      'message': instance.message,
+      'messageJson': instance.messageJson,
+      'idMap': instance.idMap,
+    };
+
+DataMattermostBuild _$DataMattermostBuildFromJson(Map<String, dynamic> json) =>
+    DataMattermostBuild()
+      ..workspace = json['workspace'] as String?
+      ..passExitCodes = (json['passExitCodes'] as List<dynamic>?)
+          ?.map((e) => (e as num).toInt())
+          .toList()
+      ..setResult = json['setResult'] as String?
+      ..setExitCode = json['setExitCode'] as String?
+      ..showPrint = json['showPrint'] as bool?
+      ..token = json['token'] as String
+      ..url = json['url'] as String
+      ..channelId = json['channelId'] as String?
+      ..property = json['property']
+      ..message = json['message'] as Map<String, dynamic>?
+      ..messageJson = json['messageJson'] as String?
+      ..idMap = (json['idMap'] as Map<String, dynamic>?)?.map(
+        (k, e) => MapEntry(k, e as String),
+      )
+      ..appName = json['appName'] as String
+      ..type = $enumDecode(_$MattermostBuildTypeEnumMap, json['type'])
+      ..color = json['color'] as String
+      ..version = json['version'] as String
+      ..downloadURL = json['downloadURL'] as String;
+
+Map<String, dynamic> _$DataMattermostBuildToJson(
+        DataMattermostBuild instance) =>
+    <String, dynamic>{
+      'workspace': instance.workspace,
+      'passExitCodes': instance.passExitCodes,
+      'setResult': instance.setResult,
+      'setExitCode': instance.setExitCode,
+      'showPrint': instance.showPrint,
+      'token': instance.token,
+      'url': instance.url,
+      'channelId': instance.channelId,
+      'property': instance.property,
+      'message': instance.message,
+      'messageJson': instance.messageJson,
+      'idMap': instance.idMap,
+      'appName': instance.appName,
+      'type': _$MattermostBuildTypeEnumMap[instance.type]!,
+      'color': instance.color,
+      'version': instance.version,
+      'downloadURL': instance.downloadURL,
+    };
+
+const _$MattermostBuildTypeEnumMap = {
+  MattermostBuildType.android: 'android',
+  MattermostBuildType.ios: 'ios',
+  MattermostBuildType.windows: 'windows',
+  MattermostBuildType.mac: 'mac',
+  MattermostBuildType.web: 'web',
+};
+
 DataJira _$DataJiraFromJson(Map<String, dynamic> json) => DataJira()
   ..workspace = json['workspace'] as String?
   ..passExitCodes = (json['passExitCodes'] as List<dynamic>?)
diff --git a/lib/oto/utils/mattermost/mattermost_data.dart b/lib/oto/utils/mattermost/mattermost_data.dart
new file mode 100644
index 0000000..37c6fc7
--- /dev/null
+++ b/lib/oto/utils/mattermost/mattermost_data.dart
@@ -0,0 +1,246 @@
+// ignore_for_file: non_constant_identifier_names
+
+import 'dart:convert';
+
+class DataMattermost {
+  String? channel_id;
+  String? channel;
+  String? message;
+  String? text;
+  String? username;
+  String? icon_url;
+  String? icon_emoji;
+  String? type;
+  Map<String, dynamic>? props;
+  List<MattermostAttachment>? attachments;
+
+  String get json {
+    return jsonEncode(toPostJson());
+  }
+
+  DataMattermost();
+
+  factory DataMattermost.fromJson(Map<String, dynamic> json) {
+    final data = DataMattermost();
+    data.channel_id = json['channel_id'] as String?;
+    data.channel = json['channel'] as String?;
+    data.message = json['message'] as String?;
+    data.text = json['text'] as String?;
+    data.username = json['username'] as String?;
+    data.icon_url = json['icon_url'] as String?;
+    data.icon_emoji = json['icon_emoji'] as String?;
+    data.type = json['type'] as String?;
+    if (json['props'] is Map<String, dynamic>) {
+      data.props =
+          Map<String, dynamic>.from(json['props'] as Map<String, dynamic>);
+    } else if (json['props'] is Map) {
+      data.props = Map<String, dynamic>.from(json['props'] as Map);
+    }
+    if (json['attachments'] is List) {
+      data.attachments = (json['attachments'] as List)
+          .map((item) => MattermostAttachment.fromJson(
+              Map<String, dynamic>.from(item as Map)))
+          .toList();
+    }
+    return data;
+  }
+
+  Map<String, dynamic> toJson() {
+    return removeEmptyKeys({
+      'channel_id': channel_id,
+      'channel': channel,
+      'message': message,
+      'text': text,
+      'username': username,
+      'icon_url': icon_url,
+      'icon_emoji': icon_emoji,
+      'type': type,
+      'props': props,
+      'attachments': attachments?.map((item) => item.toJson()).toList(),
+    });
+  }
+
+  Map<String, dynamic> toPostJson({String? defaultChannelId}) {
+    return normalizeMattermostPost(toJson(),
+        defaultChannelId: defaultChannelId);
+  }
+}
+
+class MattermostAttachment {
+  String? fallback;
+  String? color;
+  String? pretext;
+  String? text;
+  String? author_name;
+  String? author_link;
+  String? author_icon;
+  String? title;
+  String? title_link;
+  String? image_url;
+  String? thumb_url;
+  String? footer;
+  String? footer_icon;
+  List<MattermostField>? fields;
+  List<Map<String, dynamic>>? actions;
+
+  MattermostAttachment();
+
+  factory MattermostAttachment.fromJson(Map<String, dynamic> json) {
+    final data = MattermostAttachment();
+    data.fallback = json['fallback'] as String?;
+    data.color = json['color'] as String?;
+    data.pretext = json['pretext'] as String?;
+    data.text = json['text'] as String?;
+    data.author_name = json['author_name'] as String?;
+    data.author_link = json['author_link'] as String?;
+    data.author_icon = json['author_icon'] as String?;
+    data.title = json['title'] as String?;
+    data.title_link = json['title_link'] as String?;
+    data.image_url = json['image_url'] as String?;
+    data.thumb_url = json['thumb_url'] as String?;
+    data.footer = json['footer'] as String?;
+    data.footer_icon = json['footer_icon'] as String?;
+    if (json['fields'] is List) {
+      data.fields = (json['fields'] as List)
+          .map((item) =>
+              MattermostField.fromJson(Map<String, dynamic>.from(item as Map)))
+          .toList();
+    }
+    if (json['actions'] is List) {
+      data.actions = (json['actions'] as List)
+          .map((item) => Map<String, dynamic>.from(item as Map))
+          .toList();
+    }
+    return data;
+  }
+
+  Map<String, dynamic> toJson() {
+    return removeEmptyKeys({
+      'fallback': fallback,
+      'color': color,
+      'pretext': pretext,
+      'text': text,
+      'author_name': author_name,
+      'author_link': author_link,
+      'author_icon': author_icon,
+      'title': title,
+      'title_link': title_link,
+      'image_url': image_url,
+      'thumb_url': thumb_url,
+      'footer': footer,
+      'footer_icon': footer_icon,
+      'fields': fields?.map((item) => item.toJson()).toList(),
+      'actions': actions,
+    });
+  }
+}
+
+class MattermostField {
+  String? title;
+  String? value;
+  bool short = false;
+
+  MattermostField();
+  MattermostField.withParam(this.title, this.value, {this.short = false});
+
+  factory MattermostField.fromJson(Map<String, dynamic> json) {
+    final data = MattermostField();
+    data.title = json['title'] as String?;
+    data.value = json['value'] as String?;
+    data.short = json['short'] as bool? ?? false;
+    return data;
+  }
+
+  Map<String, dynamic> toJson() {
+    return removeEmptyKeys({
+      'title': title,
+      'value': value,
+      'short': short,
+    });
+  }
+}
+
+Map<String, dynamic> normalizeMattermostPost(Map<String, dynamic> payload,
+    {String? defaultChannelId}) {
+  final map = Map<String, dynamic>.from(payload);
+  final props = map['props'] is Map<String, dynamic>
+      ? Map<String, dynamic>.from(map['props'] as Map<String, dynamic>)
+      : map['props'] is Map
+          ? Map<String, dynamic>.from(map['props'] as Map)
+          : <String, dynamic>{};
+
+  if ((map['channel_id'] == null || '${map['channel_id']}'.isEmpty)) {
+    final channel = map.remove('channel');
+    if (channel != null && '$channel'.isNotEmpty) {
+      map['channel_id'] = channel;
+    } else if (defaultChannelId != null && defaultChannelId.isNotEmpty) {
+      map['channel_id'] = defaultChannelId;
+    }
+  } else {
+    map.remove('channel');
+  }
+
+  if ((map['message'] == null || '${map['message']}'.isEmpty) &&
+      map['text'] != null) {
+    map['message'] = map.remove('text');
+  } else {
+    map.remove('text');
+  }
+
+  _moveValueToProps(map, props, 'attachments', 'attachments');
+  _moveValueToProps(map, props, 'username', 'override_username');
+  _moveValueToProps(map, props, 'icon_url', 'override_icon_url');
+  _moveValueToProps(map, props, 'icon_emoji', 'override_icon_emoji');
+
+  if (props.isNotEmpty) {
+    map['props'] = props;
+  } else {
+    map.remove('props');
+  }
+
+  return removeEmptyKeys(map);
+}
+
+void _moveValueToProps(
+  Map<String, dynamic> source,
+  Map<String, dynamic> props,
+  String sourceKey,
+  String targetKey,
+) {
+  if (props[targetKey] != null) {
+    source.remove(sourceKey);
+    return;
+  }
+
+  final value = source.remove(sourceKey);
+  if (value != null) {
+    props[targetKey] = value;
+  }
+}
+
+Map<String, dynamic> removeEmptyKeys(Map<String, dynamic> map) {
+  final emptyKeys = <String>[];
+  for (final item in map.entries) {
+    final value = item.value;
+    if (value == null) {
+      emptyKeys.add(item.key);
+      continue;
+    }
+    if (value is String && value.isEmpty) {
+      emptyKeys.add(item.key);
+      continue;
+    }
+    if (value is List && value.isEmpty) {
+      emptyKeys.add(item.key);
+      continue;
+    }
+    if (value is Map && value.isEmpty) {
+      emptyKeys.add(item.key);
+    }
+  }
+
+  for (final key in emptyKeys) {
+    map.remove(key);
+  }
+  return map;
+}
diff --git a/lib/oto/utils/mattermost/mattermost_sender.dart b/lib/oto/utils/mattermost/mattermost_sender.dart
new file mode 100644
index 0000000..fa8c334
--- /dev/null
+++ b/lib/oto/utils/mattermost/mattermost_sender.dart
@@ -0,0 +1,113 @@
+import 'dart:async';
+import 'dart:convert';
+
+import 'package:color/color.dart';
+import 'package:dart_framework/utils/string_util.dart';
+import 'package:dart_framework/utils/system_util.dart';
+import 'package:http/http.dart' as http;
+import 'package:oto_cli/oto/utils/mattermost/mattermost_data.dart';
+
+enum MattermostBuildType { android, ios, windows, mac, web }
+
+class MattermostSender {
+  final String token;
+  final String url;
+
+  MattermostSender(this.token, this.url);
+
+  Future sendData(DataMattermost message,
+      {String? defaultChannelId,
+      Function(String)? completeListener,
+      Function(Object)? errorListener}) async {
+    return sendMap(message.toPostJson(defaultChannelId: defaultChannelId),
+        completeListener: completeListener, errorListener: errorListener);
+  }
+
+  Future sendMap(Map<String, dynamic> payload,
+      {Function(String)? completeListener,
+      Function(Object)? errorListener}) async {
+    return send(jsonEncode(payload),
+        completeListener: completeListener, errorListener: errorListener);
+  }
+
+  Future send(String jsonString,
+      {Function(String)? completeListener,
+      Function(Object)? errorListener}) async {
+    final decoded = jsonDecode(jsonString);
+    if (decoded is! Map) {
+      throw Exception('Mattermost payload must be a JSON object.');
+    }
+
+    final payload = normalizeMattermostPost(Map<String, dynamic>.from(decoded));
+    final header = {
+      'Content-Type': 'application/json',
+      'Authorization': 'Bearer $token',
+    };
+    final encoded = jsonEncode(payload);
+    print(encoded);
+    final response =
+        await http.post(Uri.parse(url), headers: header, body: encoded);
+
+    print(response.statusCode);
+
+    if (response.statusCode >= 200 && response.statusCode < 300) {
+      print(response.body);
+      if (completeListener != null) {
+        completeListener(response.body);
+      }
+    } else {
+      print(response.body);
+      if (errorListener != null) {
+        errorListener(response);
+      }
+      throw Exception(
+          'Mattermost post failed (${response.statusCode}): ${response.body}');
+    }
+
+    return simpleFuture;
+  }
+
+  Future sendBuild(String appName, MattermostBuildType buildType, Color color,
+      String version, String downloadURL,
+      {required String channelId}) async {
+    final buildURL = 'https://toki-labs.com/cdn/build/';
+    final thumbUrl = buildType == MattermostBuildType.android
+        ? '${buildURL}android.png'
+        : '${buildURL}appstore.png';
+    final projectIcon = '$buildURL$appName/icon.png';
+    final buildTypeStr = buildTypeToString(buildType);
+    final osColor =
+        buildType == MattermostBuildType.ios ? '#ED145B' : '#81CA3F';
+
+    final message = DataMattermost()
+      ..channel_id = channelId
+      ..message = '${toPascal(appName)} $buildTypeStr build is ready.'
+      ..props = {
+        'attachments': [
+          MattermostAttachment()
+            ..color = color.toHexColor().toCssString()
+            ..fields = [
+              MattermostField.withParam(
+                  toPascal(appName), 'App: ${toPascal(appName)}')
+            ],
+          MattermostAttachment()
+            ..color = osColor
+            ..author_name = buildTypeStr
+            ..author_icon = thumbUrl
+            ..thumb_url = projectIcon
+            ..title = 'Download'
+            ..title_link = downloadURL
+            ..text =
+                'Successfully built $buildTypeStr binary file.\nBuild version: **$version**'
+            ..fields = [MattermostField.withParam('Download URL', downloadURL)],
+        ].map((item) => item.toJson()).toList(),
+      };
+
+    return sendData(message);
+  }
+
+  String buildTypeToString(MattermostBuildType type) {
+    final typeStr = type.name;
+    return typeStr == 'ios' ? 'iOS' : toPascal(typeStr);
+  }
+}