Are there any best practices for PHP email sending to ensure a higher delivery rate?

To ensure a higher email delivery rate when sending emails via PHP, it is recommended to use a reputable email service provider (ESP) that specializes in email deliverability. Additionally, make sure to properly authenticate your emails using SPF, DKIM, and DMARC records to prevent them from being marked as spam. Finally, regularly monitor your email sending practices and adjust as needed to maintain a good sender reputation. 

// Example PHP code snippet using PHPMailer to send authenticated emails via a reputable ESP

use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\Exception;

require 'vendor/autoload.php';

$mail = new PHPMailer(true);

try {
    $mail->isSMTP();
    $mail->Host = 'smtp.yourespsmtp.com';
    $mail->SMTPAuth = true;
    $mail->Username = 'yourusername';
    $mail->Password = 'yourpassword';
    $mail->SMTPSecure = 'tls';
    $mail->Port = 587;

    $mail->setFrom('from@example.com', 'Your Name');
    $mail->addAddress('recipient@example.com', 'Recipient Name');

    $mail->isHTML(true);
    $mail->Subject = 'Subject';
    $mail->Body = 'Email content goes here';

    $mail->send();
    echo 'Email sent successfully';
} catch (Exception $e) {
    echo 'Email could not be sent. Mailer Error: ' . $mail->ErrorInfo;
}

Keywords

SMTP SPF DKIM DMARC email headers

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