在lumen中使用smtp方式发送txt/plain邮件

1、安装邮件组件
   修改composer.json，在require中增加以下语句，并执行composer update

"illuminate/mail":"*"

2、增加config/mail.php

<?php
return [
	'driver' => env('MAIL_DRIVER'),
	'host' => env('MAIL_HOST'),
	'port' => env('MAIL_PORT'),
	'username' => env('MAIL_USERNAME'),
	'password' => env('MAIL_PASSWORD'),
	'encryption' => env('MAIL_ENCRYPTION', 'tls'),
];

3、修改.env，增加以下语句

MAIL_DRIVER=smtp
MAIL_HOST=smtp.exmail.qq.com
MAIL_PORT=465
MAIL_USERNAME=[e-mail]
MAIL_PASSWORD=password123
MAIL_ENCRYPTION=ssl

4、修改bootstrap/app.php，增加以下语句

……
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$app->configure('mail');
……
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$app->register(Illuminate\Mail\MailServiceProvider::class);
class_alias('Illuminate\Support\Facades\Mail', 'Mail');
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5、发送邮件

use Mail;
……
……
// 注意from与.env中的user_name要一致
$mail = array(
	'content' => '测试信息，hello world！',
	'to' => '[e-mail]',
	'from' => [e-mail],
	'subject' => '测试邮件',
	'from_name' => '小苹果',
);
Mail::raw($this->mail['content'], function ($msg) use ($mailbox) {
	$msg->to($mailbox);
	$msg->from($this->mail['from'], $this->mail['from_name']);
	$msg->subject($this->mail['subject']);
});
……
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