How to display $client_password correctly in the Product Message Welcome email?

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I created a custom "Product Messages" for my users as a welcome email with their product username and password. Almost everything works fine.

 

However, I also want to include their WHMCS username and password. However, their password is obfuscated and only shown as ****** when I try this:

Email Address: {$client_email}
Password: {$client_password}

 

Is there a way for me to show the $client_password correctly in those emails?