What are best practices for sending images in HTML emails using PHP to ensure they are displayed correctly?

When sending images in HTML emails using PHP, it's important to ensure that the images are properly embedded and referenced in the email content. To do this, you can use the PHPMailer library to send the email with the images embedded as attachments. This ensures that the images are displayed correctly in the email client. 

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

require 'vendor/autoload.php';

// Create a new PHPMailer instance
$mail = new PHPMailer();

// Set the email parameters
$mail->isHTML(true);
$mail->Subject = 'Your Subject';
$mail->Body = '<img src="cid:unique_cid">'; // Use unique_cid to reference the attached image

// Add the image as an attachment and embed it in the email
$mail->AddEmbeddedImage('path/to/image.jpg', 'unique_cid', 'image.jpg');

// Send the email
if($mail->send()) {
    echo 'Email sent successfully';
} else {
    echo 'Email could not be sent';
}

Keywords

HTML emails images PHP encoding MIME types

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