How can HTML formatting be properly implemented in PHP emails using the PHPMailer class?

When sending HTML-formatted emails using the PHPMailer class in PHP, you need to set the Content-Type header to 'text/html'. This tells the email client that the message content is in HTML format. You can achieve this by using the PHPMailer class method `isHTML(true)`. 

<?php
use PHPMailer\PHPMailer\PHPMailer;
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 = 'tls';
    $mail->Port = 587;

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

    //Content
    $mail->isHTML(true); // Set email format to HTML
    $mail->Subject = 'HTML Email Test';
    $mail->Body = '<h1>This is a test HTML email</h1>';

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

Keywords

PHP PHPMailer HTML formatting emails implementation

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