diff --git a/composer.json b/composer.json
index 4bbd041..12baec9 100644
--- a/composer.json
+++ b/composer.json
@@ -36,7 +36,8 @@
     "mcp/sdk": "^0.7",
     "psr/simple-cache": ">=1.0",
     "league/flysystem-aws-s3-v3": "^3.0",
-    "league/flysystem-webdav": "^3.0"
+    "league/flysystem-webdav": "^3.0",
+    "phpmailer/phpmailer": "^7.1"
   },
   "require-dev": {
     "symfony/var-dumper": "*",
diff --git a/composer.lock b/composer.lock
index 3cbe36e..b5f4a4c 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "e99cd9f4e74aad9a5d34050bab8d0c2a",
+    "content-hash": "3ed07ae29f248003750e594a22070cca",
     "packages": [
         {
             "name": "aliyuncs/oss-sdk-php",
@@ -2233,6 +2233,82 @@
             },
             "time": "2026-01-06T21:53:42+00:00"
         },
+        {
+            "name": "phpmailer/phpmailer",
+            "version": "v7.1.1",
+            "dist": {
+                "type": "zip",
+                "url": "https://nexus.hl7.top:1243/repository/composer-proxy/phpmailer/phpmailer/v7.1.1/phpmailer-phpmailer-v7.1.1.zip",
+                "reference": "1bc1716a507a65e039d4ac9d9adebbbd0d346e15",
+                "shasum": ""
+            },
+            "require": {
+                "ext-ctype": "*",
+                "ext-filter": "*",
+                "ext-hash": "*",
+                "php": ">=5.5.0"
+            },
+            "require-dev": {
+                "dealerdirect/phpcodesniffer-composer-installer": "^1.0",
+                "doctrine/annotations": "^1.2.6 || ^1.13.3",
+                "php-parallel-lint/php-console-highlighter": "^1.0.0",
+                "php-parallel-lint/php-parallel-lint": "^1.3.2",
+                "phpcompatibility/php-compatibility": "^10.0.0@dev",
+                "squizlabs/php_codesniffer": "^3.13.5",
+                "yoast/phpunit-polyfills": "^1.0.4"
+            },
+            "suggest": {
+                "decomplexity/SendOauth2": "Adapter for using XOAUTH2 authentication",
+                "directorytree/imapengine": "For uploading sent messages via IMAP, see gmail example",
+                "ext-imap": "Needed to support advanced email address parsing according to RFC822",
+                "ext-mbstring": "Needed to send email in multibyte encoding charset or decode encoded addresses",
+                "ext-openssl": "Needed for secure SMTP sending and DKIM signing",
+                "greew/oauth2-azure-provider": "Needed for Microsoft Azure XOAUTH2 authentication",
+                "hayageek/oauth2-yahoo": "Needed for Yahoo XOAUTH2 authentication",
+                "league/oauth2-google": "Needed for Google XOAUTH2 authentication",
+                "psr/log": "For optional PSR-3 debug logging",
+                "symfony/polyfill-mbstring": "To support UTF-8 if the Mbstring PHP extension is not enabled (^1.2)",
+                "thenetworg/oauth2-azure": "Needed for Microsoft XOAUTH2 authentication"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "PHPMailer\\PHPMailer\\": "src/"
+                }
+            },
+            "license": [
+                "LGPL-2.1-only"
+            ],
+            "authors": [
+                {
+                    "name": "Marcus Bointon",
+                    "email": "phpmailer@synchromedia.co.uk"
+                },
+                {
+                    "name": "Jim Jagielski",
+                    "email": "jimjag@gmail.com"
+                },
+                {
+                    "name": "Andy Prevost",
+                    "email": "codeworxtech@users.sourceforge.net"
+                },
+                {
+                    "name": "Brent R. Matzelle"
+                }
+            ],
+            "description": "PHPMailer is a full-featured email creation and transfer class for PHP",
+            "support": {
+                "issues": "https://github.com/PHPMailer/PHPMailer/issues",
+                "source": "https://github.com/PHPMailer/PHPMailer/tree/v7.1.1"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/Synchro",
+                    "type": "github"
+                }
+            ],
+            "time": "2026-05-18T08:06:14+00:00"
+        },
         {
             "name": "phpoffice/phpspreadsheet",
             "version": "1.30.3",
@@ -6174,7 +6250,7 @@
     ],
     "aliases": [],
     "minimum-stability": "stable",
-    "stability-flags": [],
+    "stability-flags": {},
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
@@ -6182,6 +6258,6 @@
         "ext-json": "*",
         "ext-fileinfo": "*"
     },
-    "platform-dev": [],
-    "plugin-api-version": "2.6.0"
+    "platform-dev": {},
+    "plugin-api-version": "2.9.0"
 }
diff --git a/extend/base/common/notice/channel/EmailChannel.php b/extend/base/common/notice/channel/EmailChannel.php
new file mode 100644
index 0000000..b76a9be
--- /dev/null
+++ b/extend/base/common/notice/channel/EmailChannel.php
@@ -0,0 +1,85 @@
+<?php
+
+namespace base\common\notice\channel;
+
+use base\common\notice\NoticeChannelInterface;
+use PHPMailer\PHPMailer\Exception as PHPMailerException;
+use PHPMailer\PHPMailer\PHPMailer;
+use RuntimeException;
+
+/**
+ * 邮件渠道驱动（PHPMailer SMTP）.
+ *
+ * 读取 sysconfig notify 组 SMTP 参数执行真实投递：
+ * 抛出异常视为投递失败，异常消息携带 PHPMailer ErrorInfo（含 SMTP 会话 lastError），
+ * timer 消费者据此退避重试直至终态。
+ */
+class EmailChannel implements NoticeChannelInterface
+{
+    public static function name(): string
+    {
+        return 'email';
+    }
+
+    public function send(array $target, array $notice): bool
+    {
+        // 全局总闸：DB 值为字符串，(int) 强转判断；仅 '1' 视为启用（缺省/0 均为关，
+        // 与系统配置 notify 组 notify_email_enable 默认值 0 一致），关闭即抛异常。
+        if ((int) sysconfig('notify', 'notify_email_enable') !== 1) {
+            throw new RuntimeException('邮件发送失败: 渠道未启用（notify_email_enable != 1）');
+        }
+
+        $host     = (string) sysconfig('notify', 'notify_smtp_host');
+        $port     = (int) sysconfig('notify', 'notify_smtp_port');
+        $secure   = strtolower((string) sysconfig('notify', 'notify_smtp_secure'));
+        $user     = (string) sysconfig('notify', 'notify_smtp_user');
+        $pass     = (string) sysconfig('notify', 'notify_smtp_pass');
+        $from     = (string) sysconfig('notify', 'notify_smtp_from', 'notice@localhost');
+        $fromName = (string) sysconfig('notify', 'notify_smtp_from_name');
+
+        $title   = (string) ($notice['title'] ?? '');
+        $content = (string) ($notice['content'] ?? '');
+
+        $mailer = new PHPMailer(true);
+
+        try {
+            $mailer->isSMTP();
+            $mailer->Host = $host;
+            $mailer->Port = $port;
+            // SMTPSecure 映射：ssl→隐式 SMTPS；tls→STARTTLS；none/未知→明文。
+            // 明文场景必须显式关闭 SMTPAutoTLS：PHPMailer 默认会对明文会话自动尝试
+            // STARTTLS 升级，Mailpit 等纯明文本地服务会被误判为失败。
+            if ($secure === 'ssl') {
+                $mailer->SMTPSecure = PHPMailer::ENCRYPTION_SMTPS;
+            } elseif ($secure === 'tls') {
+                $mailer->SMTPSecure = PHPMailer::ENCRYPTION_STARTTLS;
+            } else {
+                $mailer->SMTPSecure = '';
+                $mailer->SMTPAutoTLS = false;
+            }
+            // SMTP 认证仅在配置了用户名时启用（Mailpit 等本地无认证服务不设置）
+            if ($user !== '') {
+                $mailer->SMTPAuth = true;
+                $mailer->Username = $user;
+                $mailer->Password = $pass;
+            }
+            $mailer->CharSet = 'UTF-8';
+            $mailer->isHTML(true);
+            $mailer->setFrom($from, $fromName);
+            $mailer->addAddress((string) ($target['target_addr'] ?? ''));
+            $mailer->Subject = $title;
+            $mailer->Body = '<div style="font-family:Arial,sans-serif;">'
+                . '<h3>' . $title . '</h3>'
+                . '<div>' . nl2br($content) . '</div>'
+                . '</div>';
+
+            $mailer->send();
+        } catch (PHPMailerException $e) {
+            // send() 抛出的 Exception 消息即 $mailer->ErrorInfo（setError 已拼接
+            // SMTP lastError/detail/smtp_code），异常链保留原始异常供上游追溯
+            throw new RuntimeException('邮件发送失败: ' . $e->getMessage(), 0, $e);
+        }
+
+        return true;
+    }
+}
diff --git a/extend/base/common/notice/channel/SmsChannel.php b/extend/base/common/notice/channel/SmsChannel.php
new file mode 100644
index 0000000..27ccc25
--- /dev/null
+++ b/extend/base/common/notice/channel/SmsChannel.php
@@ -0,0 +1,46 @@
+<?php
+
+namespace base\common\notice\channel;
+
+use base\common\notice\NoticeChannelInterface;
+use think\facade\Log;
+
+/**
+ * 短信渠道驱动（骨架）.
+ *
+ * 骨架形态：读开关、记日志、恒成功，不执行真实外呼。
+ * 正常业务流不会产生 sms 投递行（scenes() 注册渠道不含 sms），
+ * 行进队列的场景是 app 层注册新场景引入 sms 渠道之后。
+ */
+class SmsChannel implements NoticeChannelInterface
+{
+    public static function name(): string
+    {
+        return 'sms';
+    }
+
+    public function send(array $target, array $notice): bool
+    {
+        /*
+         * TODO 下游对接指引（真实短信发送）：
+         *  - 使用既有 guzzlehttp/guzzle 客户端调用短信服务商 API（阿里云/腾讯云 SMS 等）；
+         *  - 读取 sysconfig('notify','notify_sms_sign'/'notify_sms_appid'/'notify_sms_secret')
+         *    组装签名与模板参数，POST 服务商接口；
+         *  - 服务商接口非成功码（HTTP 非 2xx 或业务失败码）时抛出 RuntimeException，
+         *    异常消息携带服务商返回的失败信息，交由 timer 消费者退避重试；
+         *  - target_addr 为手机号，notice 为通知主体（title/content）。
+         */
+
+        // 骨架驱动模拟发送：开关状态仅记入日志（关闭也恒成功），不拦截投递、不真实外呼
+        $enabled = (int) sysconfig('notify', 'notify_sms_enable');
+        Log::info('notice sms channel skeleton simulated send', [
+            'channel'     => self::name(),
+            'enabled'     => $enabled,
+            'notice_id'   => $notice['id'] ?? 0,
+            'target_addr' => $target['target_addr'] ?? '',
+            'title'       => $notice['title'] ?? '',
+        ]);
+
+        return true;
+    }
+}
diff --git a/extend/base/common/notice/channel/WechatChannel.php b/extend/base/common/notice/channel/WechatChannel.php
new file mode 100644
index 0000000..8d45878
--- /dev/null
+++ b/extend/base/common/notice/channel/WechatChannel.php
@@ -0,0 +1,46 @@
+<?php
+
+namespace base\common\notice\channel;
+
+use base\common\notice\NoticeChannelInterface;
+use think\facade\Log;
+
+/**
+ * 公众号渠道驱动（骨架）.
+ *
+ * 骨架形态：读开关、记日志、恒成功，不执行真实外呼。
+ * 正常业务流不会产生 wechat 投递行（scenes() 注册渠道不含 wechat），
+ * 行进队列的场景是 app 层注册新场景引入 wechat 渠道之后。
+ */
+class WechatChannel implements NoticeChannelInterface
+{
+    public static function name(): string
+    {
+        return 'wechat';
+    }
+
+    public function send(array $target, array $notice): bool
+    {
+        /*
+         * TODO 下游对接指引（公众号模板消息）：
+         *  - 实现 access_token 管理：用 sysconfig('notify','notify_wechat_appid'/'notify_wechat_secret')
+         *    调用微信 token 接口获取凭证，缓存至过期前（token 有效期 7200s，需集中缓存防刷）；
+         *  - 用 guzzlehttp/guzzle 调用模板消息接口（POST /cgi-bin/message/template/send），
+         *    target_addr 为接收用户 openid，notice（title/content）映射模板字段；
+         *  - 微信返回 errcode 非 0 时抛出 RuntimeException（携带 errcode/errmsg），
+         *    交由 timer 消费者退避重试。
+         */
+
+        // 骨架驱动模拟发送：开关状态仅记入日志（关闭也恒成功），不拦截投递、不真实外呼
+        $enabled = (int) sysconfig('notify', 'notify_wechat_enable');
+        Log::info('notice wechat channel skeleton simulated send', [
+            'channel'     => self::name(),
+            'enabled'     => $enabled,
+            'notice_id'   => $notice['id'] ?? 0,
+            'target_addr' => $target['target_addr'] ?? '',
+            'title'       => $notice['title'] ?? '',
+        ]);
+
+        return true;
+    }
+}
diff --git a/tests/Feature/NoticeChannelTest.php b/tests/Feature/NoticeChannelTest.php
new file mode 100644
index 0000000..98a9939
--- /dev/null
+++ b/tests/Feature/NoticeChannelTest.php
@@ -0,0 +1,123 @@
+<?php
+
+declare(strict_types=1);
+
+namespace tests\Feature;
+
+use app\common\test\TestCase;
+use base\common\notice\channel\EmailChannel;
+use base\common\notice\channel\SmsChannel;
+use base\common\notice\channel\WechatChannel;
+use app\common\service\NoticeService;
+use think\facade\Cache;
+use think\facade\Db;
+
+/**
+ * 渠道驱动集成测试（任务 4 增补）.
+ *
+ * 覆盖：
+ *  1. EmailChannel 在 notify_email_enable=0 时抛异常（渠道总闸关闭=投递失败信号）
+ *  2. SmsChannel send() 返回 true（骨架恒成功）
+ *  3. WechatChannel send() 返回 true（骨架恒成功）
+ *  4. 驱动 name() 标识与 channels() 映射一致
+ *
+ * fixture 均为事务内自造数据，tearDown 自动回滚；
+ * sysconfig 缓存不受事务回滚影响，配置行写入后显式清 tag（见 setNotifyConfig/tearDown）。
+ */
+class NoticeChannelTest extends TestCase
+{
+    /** 本测试类是否写过 notify 配置行（决定 tearDown 是否清 sysconfig 缓存） */
+    private bool $touchedSysconfig = false;
+
+    // =========================================================================
+    // 1. EmailChannel 总闸关闭抛异常
+    // =========================================================================
+
+    public function test_email_channel_throws_when_disabled(): void
+    {
+        // 插入关闭配置行（value='0'）并清 sysconfig 缓存（缓存不受事务回滚影响）
+        $this->setNotifyConfig('notify_email_enable', '0');
+
+        $this->expectException(\RuntimeException::class);
+        $this->expectExceptionMessage('渠道未启用');
+
+        (new EmailChannel())->send(
+            ['channel' => 'email', 'target_addr' => 'disabled@test.com', 'status' => 0],
+            ['id' => 1, 'scene' => 'common', 'title' => '标题', 'content' => '内容']
+        );
+    }
+
+    // =========================================================================
+    // 2. SmsChannel 骨架恒成功
+    // =========================================================================
+
+    public function test_sms_channel_send_returns_true(): void
+    {
+        $this->assertTrue((new SmsChannel())->send(
+            ['channel' => 'sms', 'target_addr' => '13800138000', 'status' => 0],
+            ['id' => 1, 'scene' => 'common', 'title' => '标题', 'content' => '内容']
+        ));
+    }
+
+    // =========================================================================
+    // 3. WechatChannel 骨架恒成功
+    // =========================================================================
+
+    public function test_wechat_channel_send_returns_true(): void
+    {
+        $this->assertTrue((new WechatChannel())->send(
+            ['channel' => 'wechat', 'target_addr' => 'openid_demo', 'status' => 0],
+            ['id' => 1, 'scene' => 'common', 'title' => '标题', 'content' => '内容']
+        ));
+    }
+
+    // =========================================================================
+    // 4. name() 契约与 channels() 映射一致
+    // =========================================================================
+
+    public function test_channel_names_match_service_mapping(): void
+    {
+        $this->assertSame('email', EmailChannel::name());
+        $this->assertSame('sms', SmsChannel::name());
+        $this->assertSame('wechat', WechatChannel::name());
+
+        $channels = NoticeService::channels();
+        $this->assertSame(EmailChannel::class, $channels['email']);
+        $this->assertSame(SmsChannel::class, $channels['sms']);
+        $this->assertSame(WechatChannel::class, $channels['wechat']);
+    }
+
+    // =========================================================================
+    // fixture 工厂（事务内运行，tearDown 自动回滚；缓存显式清理）
+    // =========================================================================
+
+    /**
+     * 写 notify 组配置行并清 sysconfig 缓存.
+     *
+     * sysconfig 缓存不受事务回滚影响：必须显式清 tag 才能让后续读取
+     * 看到事务内的新值（value='0' 因 empty('0') 恒不写缓存，但清理是
+     * 防御后续用例被前序非 '0' 缓存值污染的统一口径）。
+     */
+    private function setNotifyConfig(string $name, string $value): void
+    {
+        Db::name('system_config')->insert([
+            'name'        => $name,
+            'group'       => 'notify',
+            'value'       => $value,
+            'remark'      => 'NoticeChannelTest fixture',
+            'sort'        => 100,
+            'create_time' => time(),
+            'update_time' => time(),
+        ]);
+        $this->touchedSysconfig = true;
+        Cache::tag('sysconfig')->clear();
+    }
+
+    protected function tearDown(): void
+    {
+        if ($this->touchedSysconfig) {
+            Cache::tag('sysconfig')->clear();
+        }
+        parent::tearDown();
+    }
+}