'mailer' => [
	'class' => 'yii\swiftmailer\Mailer',
    // send all mails to a file by default. You have to set
    // 'useFileTransport' to false and configure a transport
    // for the mailer to send real emails.
    'useFileTransport' => false,//true表示只生成文件不發(fā)
    'transport' => [
    	'class' => 'Swift_SmtpTransport',
        'host' => 'smtp.qq.com',  //每種郵箱的host配置不一樣
        'username' => 'xxxxx@qq.com',//改成自己的郵箱
        'password' => 'xxxxxxxx',//改成自己的郵箱token
        'port' => '465',
        'encryption' => 'ssl',
	],
    'messageConfig'=>[
    	'charset'=>'UTF-8',
        'from'=>['xxxxx@qq.com'=>'YiiAdmin']//郵件顯示名稱
	],
],

public function actionSendMail(){
	$mail= Yii::$app->mailer->compose('reset-password',['token'=>'xxxxxx']);
	// 渲染一個視圖作為郵件模板 文件路徑mail/reset-password.php,注意，不在view中
	$mail->setTo('xxxxx@hotmail.com');//要發(fā)送到的郵箱地址
	$mail->setSubject("郵件測試【重置密碼】");//郵件標(biāo)題
	if($mail->send())
		echo "success";
	else
		echo "failse";
	die();
}

<?php
$resetLink = Yii::$app->urlManager->createAbsoluteUrl(['site/reset-password', 'token' => $token]);
?>
<div>
	<h5>密碼重置服務(wù)</h5>
	<a href="<?=$resetLink?>">點擊重置密碼</a>
</div>