摘要：參照于直接上代碼一配置文件根據實際情況配置這里如果你是的郵箱，可以參考客戶端設置后再進行配置改成自己的用戶名密碼或者端口或者發送人的名字二基礎用法要發送給那個人的郵箱郵件主題郵件主題測試發布純文字文本測試發送的消息內容三發

參照于 http://www.manks.top/yii2_swi...
直接上代碼
一、配置文件web.php

"mailer" => [ 
            "class" => "yiiswiftmailerMailer", 
             "viewPath" => "xx/mail", //根據實際情況配置
            
            "useFileTransport" => false, 
            "transport" => [ 
              //這里如果你是qq的郵箱，可以參考qq客戶端設置后再進行配置 http://service.mail.qq.com/cgi-bin/help?subtype=1&&id=28&&no=1001256
                "class" => "Swift_SmtpTransport", 
                "host" => "smtp.163.com", 
                "username" => "XXX@163.com", //改成自己的用戶名密碼
                "password" => "XXX", 
                "port" => "994", //或者25端口
                "encryption" => "ssl", //或者tls
            ], 
            "messageConfig"=>[ 
                "charset"=>"UTF-8", 
                "from"=>["XXX@163.com"=>"發送人的名字"] 
            ], 
        ], 

二、基礎用法

public function actionSend(){
        $mail= Yii::$app->mailer->compose(); 
        $mail->setTo("XXX@qq.com"); //要發送給那個人的郵箱 
        $mail->setSubject("郵件主題"); //郵件主題 
        $mail->setTextBody("測試text"); //發布純文字文本 
        $mail->setHtmlBody("測試html"); //發送的消息內容 
        var_dump($mail->send());
    }

三、發送多個郵件

public function actionSendmult(){
        $users = ["XXX@163.com","XXX@qq.com"];
        foreach($users as $user) {
            $messages[] = Yii::$app->mailer->compose() 
                ->setTo($user) 
                ->setSubject("測試主題") 
                ->setHtmlBody("
測試多郵件
"); 
        } 
        $res = Yii::$app->mailer->sendMultiple($messages);
        if ($res){
            echo "success";
        }
    }

四、發送郵件用模板

controller代碼：
public function actionSendtem(){
        $res = Yii::$app->mailer->compose("welcome", [ 
                "html" => "html", //key固定,value是模版文件名，布局文件在maillayouts目錄下面
                "title" => "郵件" ,//傳遞的參數
            ]) 
            ->setTo("XXX@qq.com") 
            ->setSubject("Message subject") 
            ->send(); 
        var_dump($res); //true
    }
    
welcome.php文件：

五、發送文件和圖片

public function actionFile(){
        $message = Yii::$app->mailer->compose(); 
        $message->attach("img/2.png"); //可訪問的圖片地址或者文件
        $message->attachContent("文件內容", ["fileName" => "1.txt", "contentType" => "text/plain"]); 
        $message->setTo("XXX@qq.com"); 
        $message->setSubject("Message subject"); 
        $res = $message->send();
        if ($res){
            echo "success";
        }
    }

六、內容鑲嵌圖片

//controller 
Yii::$app->mailer->compose("welcome", [ "title" => "嵌入圖片", "imageFileName" => "圖片可訪問地址" ]) 
    ->setTo("***@163.com") 
    ->setSubject("Message subject") 
    ->send(); 
//welcome.php 
 //或者這里直接寫圖片的可訪問地址，不用embed方法。