How to add line break in php mail function?

@domenico 

To add a line break in the body of an email sent using the PHP mail() function, you can use the " " newline character sequence. Here is an example:

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$to = "recipient@example.com";
$subject = "Hello";
$message = "Dear recipient, 
 This is a line break in an email sent using PHP mail function.";

$headers = 'From: sender@example.com' . "
" .
    'Reply-To: sender@example.com' . "
" .
    'X-Mailer: PHP/' . phpversion();

mail($to, $subject, $message, $headers);

In this example, the " " sequence is used in the $message variable to create a line break. When the email is sent, the recipient will see the message displayed with a line break in the specified location.