1.不管是配置哪类邮箱，都需要先开启stmp服务 

2.在main.php配置文件中添加配置

//配置邮件

'mailer' => [

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

'viewPath' => '@common/mail',

'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' => '15157***@163.com',

'password' => '***',//163 登录密码 qq个人邮箱填写 stmp开启时的授权密码

'port' => '25',

'encryption' => 'tls',

],

'messageConfig'=>[

'charset'=>'UTF-8',

'from'=>['15157**@163.com'=>'admin']

],

],

],

//如果是腾讯企业邮箱

'mailer' => [

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

'viewPath' => '@common/mail',

'useFileTransport' => false,

'transport' => [

'class' => 'Swift_SmtpTransport',

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

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

'username' => '**@admin.com',

'password' => '****',

'port' => '465',

'encryption' => 'ssl',

],

'messageConfig' => [

'charset' => 'UTF-8',

'from' => ['***@admin.com' => 'admin']

],

],

],

3.在控制器中

//测试发邮件

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

$mail->setTo('151286***@qq.com');

$mail->setSubject("邮件测试");

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

if($mail->send())

echo "success";

else

echo "failse";

die();