How can PHP developers ensure proper encoding for Umlaut characters in emails sent using phpmailer?

When sending emails with Umlaut characters using phpmailer, PHP developers can ensure proper encoding by setting the CharSet property to UTF-8 in the phpmailer instance. This will ensure that the Umlaut characters are correctly encoded and displayed in the email content.

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

$mail = new PHPMailer(true);

$mail->CharSet = 'UTF-8';

// rest of the email sending code here