'components' => [

  'mailer' => [

            'class' => 'yii\swiftmailer\Mailer',

            'useFileTransport' =>false,//这句一定有，false发送邮件，true只是生成邮件在runtime文件夹下，不发邮件

            'transport' => [

                'class' => 'Swift_SmtpTransport',

                'host' => 'smtp.163.com',  //每种邮箱的host配置不一样

                'username' => '-qq32853803-@163.com',

                'password' => '.......',   邮箱授权码 而非密码

                'port' => '25',

                'encryption' => 'tls', // tls  ssl

            ],

            'messageConfig'=>[

                'charset'=>'UTF-8',

                'from'=>['qq328538031@163.com'=>'admin']

             ],

        ],

]

        $mail= Yii::$app->mailer->compose();

        $mail->setTo('cgjs@163.com');

        $mail->setSubject("邮件测试");

        //$mail->setTextBody('zheshisha ');   //发布纯文字文本

        $mail->setHtmlBody("<br>问我我我我我");    //发布可以带html标签的文本

//        print_R($mail);

//        print_r($mail->send());

        if($mail->send())

            echo "success";

        else

            echo "failse";