How can PHP developers ensure that emails are received by the intended recipients and not marked as spam or blocked by email filters?

To ensure that emails sent by PHP developers are received by the intended recipients and not marked as spam or blocked by email filters, developers can implement proper email authentication techniques such as SPF, DKIM, and DMARC. By setting up these protocols correctly, email providers are more likely to trust the emails sent from the PHP application. 

// Example PHP code snippet to send authenticated emails using PHPMailer library

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

require 'vendor/autoload.php';

$mail = new PHPMailer(true);

try {
    //Server settings
    $mail->isSMTP();
    $mail->Host = 'smtp.example.com';
    $mail->SMTPAuth = true;
    $mail->Username = 'your@example.com';
    $mail->Password = 'yourpassword';
    $mail->SMTPSecure = PHPMailer::ENCRYPTION_STARTTLS;
    $mail->Port = 587;

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

    //Content
    $mail->isHTML(true);
    $mail->Subject = 'Subject';
    $mail->Body = 'Email body content';

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

Keywords

email deliverability SPF records DKIM DMARC email authentication

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