John Davidson

Message:

I'm using PHP to send mails to multiple people in CakePHP.

I'm currently using foreach on the recipient array, which contains mail address and names, and send the mails. It's taking quite a while to send mails and can't be done as put recipients' mail as array since there's a tiny different between all mails such as receiver's names.

The mails are using same template but different parameters, is there anyway I can improve the efficiency of it?

Update: Here is the Email Template

<?= $userSex ?> <?= $userName ?>, <br>

Thanks for ordering!<br>

Your order's ID is "<?= $orderID ?>".<br>

You can check the shipping status on our website.<br>

Thank you and hope you have a wonderful day.

and here's the code.

$mail_list = {

    [0]=>{

        'userSex'=>'Miss',

        'userName'=>'V',

        'orderID'=>'xxxxxxxx'

    },

    [1]=>{

        'userSex'=>'Mr.',

        'userName'=>'Arasaka',

        'orderID'=>'xxxxxxxx'

    }

}

foreach($mail_list as $target) {

    $email = new Email();

    $email->viewBuilder()->setTemplate('notify_template');

    $email->setEmailFormat('html')

            ->setSubject($subject)

            ->setViewVars([

                'userSex' => $target['userSex'],

                'userName' => $target['userName'],

                'orderID' => $target['orderID'],

    ]);

    $emailRes = $email

        ->setFrom(['[email protected]' => 'service announence'])

        ->setTo($target['email'])

        ->setSubject($subject)

        ->send();

    if (!$emailRes) {

        $res = false;

        break;

    }

}

Every mail sent is slightly different.

Is there a way to improve the mailing speed?

---

My Answer:
One way to improve the efficiency of sending multiple emails in PHP is to use a library like PHPMailer or Swift Mailer, which are optimized for sending bulk emails. These libraries have built-in features for sending emails in batches, which can significantly reduce the time it takes to send multiple emails.

Another option is to use a queue system like RabbitMQ or Beanstalkd to offload the email sending process from your main application. This way, your application can quickly add emails to the queue and continue processing other tasks, while a separate worker process handles the actual sending of emails in the background.

Additionally, you can consider optimizing your email template to reduce the amount of processing required for each email. For example, you can pre-render the template with all the common content and only inject the dynamic parameters for each recipient during the sending process.

Lastly, make sure to check your server configuration and email sending settings to ensure that they are optimized for bulk email sending. This includes setting up proper SPF and DKIM records, using a dedicated email server or SMTP service, and monitoring your email sending limits to avoid being flagged as spam.