Contact form app: address reply to sender, not support

1) You have a contact form app on your website, 2) someone sends you a message, 3) you reply. By default, message is addressed to Boomla Support, instead of whoever submitted the message. Thus you have to change the To field of the email, which you might forget, thus you will message Boomla Support instead. (And then support will reply alerting you to resend it to the correct address.) The reply should be automatically addressed to the sender.