When I reply to an email message sent by my website, through a form, it is sent to me and not to the client.

When the administrator receives an email message from a contact request, for example (or any other that involves interaction with the user that fills in the form on the website), he/she can never reply through the button Answer/Reply, as it usually would be. Since the email is sent by the website system, the admin would be replying directly to the project and no to the client. That being, the email address that appears on the received message as the email filled in by the client on the form must be copied and pasted to a new email message.