diff --git a/src/Api.php b/src/Api.php
index ecf777d..cfd8c29 100644
--- a/src/Api.php
+++ b/src/Api.php
@@ -13,6 +13,7 @@ use BushlanovDev\MaxMessengerBot\Models\AbstractModel;
 use BushlanovDev\MaxMessengerBot\Models\Attachments\Requests\AbstractAttachmentRequest;
 use BushlanovDev\MaxMessengerBot\Models\BotInfo;
 use BushlanovDev\MaxMessengerBot\Models\Message;
+use BushlanovDev\MaxMessengerBot\Models\MessageLink;
 use BushlanovDev\MaxMessengerBot\Models\Result;
 use BushlanovDev\MaxMessengerBot\Models\Subscription;
 use InvalidArgumentException;
@@ -159,7 +160,8 @@ class Api
      * @param int|null $chatId Fill this if you send message to chat.
      * @param string|null $text Message text.
      * @param AbstractAttachmentRequest[]|null $attachments Message attachments.
-     * @param MessageFormat|null $format
+     * @param MessageFormat|null $format Message format.
+     * @param MessageLink|null $link Link to message.
      * @param bool $notify If false, chat participants would not be notified.
      * @param bool $disableLinkPreview If false, server will not generate media preview for links in text.
      *
@@ -172,6 +174,7 @@ class Api
         ?string $text = null,
         ?array $attachments = null,
         ?MessageFormat $format = null,
+        ?MessageLink $link = null,
         bool $notify = true,
         bool $disableLinkPreview = false,
     ): Message {
@@ -185,6 +188,7 @@ class Api
             'text' => $text,
             'format' => $format?->value,
             'notify' => $notify,
+            'link' => $link,
             'attachments' => $attachments !== null ? array_map(
                 fn(AbstractModel $attachment) => $attachment->toArray(),
                 $attachments,
diff --git a/src/Enums/MessageLinkType.php b/src/Enums/MessageLinkType.php
new file mode 100644
index 0000000..f9a3c87
--- /dev/null
+++ b/src/Enums/MessageLinkType.php
@@ -0,0 +1,11 @@
+<?php
+
+declare(strict_types=1);
+
+namespace BushlanovDev\MaxMessengerBot\Enums;
+
+enum MessageLinkType: string
+{
+    case Forward = 'forward';
+    case Reply = 'reply';
+}
diff --git a/src/Models/Attachments/Buttons/OpenAppButton.php b/src/Models/Attachments/Buttons/OpenAppButton.php
new file mode 100644
index 0000000..08008f9
--- /dev/null
+++ b/src/Models/Attachments/Buttons/OpenAppButton.php
@@ -0,0 +1,29 @@
+<?php
+
+declare(strict_types=1);
+
+namespace BushlanovDev\MaxMessengerBot\Models\Attachments\Buttons;
+
+use BushlanovDev\MaxMessengerBot\Enums\ButtonType;
+
+/**
+ * Opens the bot's mini-application.
+ */
+final readonly class OpenAppButton extends AbstractButton
+{
+    public ?string $webApp;
+    public ?int $contactId;
+
+    /**
+     * @param string $text Visible button text (1 to 128 characters).
+     * @param string|null $webApp The public name (username) of the bot or a link to it, whose mini-application should be launched.
+     * @param int|null $contactId The ID of the bot whose mini-app should be launched.
+     */
+    public function __construct(string $text, ?string $webApp = null, ?int $contactId = null)
+    {
+        parent::__construct(ButtonType::OpenApp, $text);
+
+        $this->webApp = $webApp;
+        $this->contactId = $contactId;
+    }
+}
diff --git a/src/Models/MessageLink.php b/src/Models/MessageLink.php
new file mode 100644
index 0000000..c6abfc1
--- /dev/null
+++ b/src/Models/MessageLink.php
@@ -0,0 +1,23 @@
+<?php
+
+declare(strict_types=1);
+
+namespace BushlanovDev\MaxMessengerBot\Models;
+
+use BushlanovDev\MaxMessengerBot\Enums\MessageLinkType;
+
+/**
+ * Message link.
+ */
+final readonly class MessageLink extends AbstractModel
+{
+    /**
+     * @param MessageLinkType $type Type of message link.
+     * @param string $mid Message identifier of original message.
+     */
+    public function __construct(
+        public MessageLinkType $type,
+        public string $mid,
+    ) {
+    }
+}
diff --git a/tests/ApiTest.php b/tests/ApiTest.php
index 08f15d4..061b4d0 100644
--- a/tests/ApiTest.php
+++ b/tests/ApiTest.php
@@ -289,6 +289,7 @@ final class ApiTest extends TestCase
             $text,
             null,
             $format,
+            null,
             $notify,
             $disableLinkPreview,
         );
diff --git a/tests/Models/Attachments/Buttons/OpenAppButtonTest.php b/tests/Models/Attachments/Buttons/OpenAppButtonTest.php
new file mode 100644
index 0000000..aa96ebf
--- /dev/null
+++ b/tests/Models/Attachments/Buttons/OpenAppButtonTest.php
@@ -0,0 +1,32 @@
+<?php
+
+declare(strict_types=1);
+
+namespace BushlanovDev\MaxMessengerBot\Tests\Models\Attachments\Buttons;
+
+use BushlanovDev\MaxMessengerBot\Enums\ButtonType;
+use BushlanovDev\MaxMessengerBot\Models\Attachments\Buttons\OpenAppButton;
+use PHPUnit\Framework\Attributes\CoversClass;
+use PHPUnit\Framework\Attributes\Test;
+use PHPUnit\Framework\TestCase;
+
+#[CoversClass(OpenAppButton::class)]
+class OpenAppButtonTest extends TestCase
+{
+    #[Test]
+    public function toArraySerializesCorrectly(): void
+    {
+        $button = new OpenAppButton('Test Button', 'MyWebApp', 123);
+
+        $expectedArray = [
+            'web_app' => 'MyWebApp',
+            'contact_id' => 123,
+            'type' => ButtonType::OpenApp->value,
+            'text' => 'Test Button',
+        ];
+
+        $resultArray = $button->toArray();
+
+        $this->assertSame($expectedArray, $resultArray);
+    }
+}
diff --git a/tests/Models/MessageLinkTest.php b/tests/Models/MessageLinkTest.php
new file mode 100644
index 0000000..04db708
--- /dev/null
+++ b/tests/Models/MessageLinkTest.php
@@ -0,0 +1,32 @@
+<?php
+
+declare(strict_types=1);
+
+namespace BushlanovDev\MaxMessengerBot\Tests\Models;
+
+use BushlanovDev\MaxMessengerBot\Enums\MessageLinkType;
+use BushlanovDev\MaxMessengerBot\Models\MessageLink;
+use PHPUnit\Framework\Attributes\CoversClass;
+use PHPUnit\Framework\Attributes\Test;
+use PHPUnit\Framework\TestCase;
+
+#[CoversClass(MessageLink::class)]
+final class MessageLinkTest extends TestCase
+{
+    #[Test]
+    public function toArraySerializesCorrectly(): void
+    {
+        $messageLink = new MessageLink(MessageLinkType::Forward, '123');
+
+        $expectedArray = [
+            'type' => MessageLinkType::Forward->value,
+            'mid' => '123',
+        ];
+
+        $resultArray = $messageLink->toArray();
+
+        $this->assertSame($expectedArray, $resultArray);
+        $this->assertSame(MessageLinkType::Forward, $messageLink->type);
+        $this->assertSame('123', $messageLink->mid);
+    }
+}