The website service I am building requires that users will recieve direct emails from each other, much like Gumtree.com.
Because I dont want users to see the actual email address, I want to setup a automated email alias/redirect so the email seen when recieved looks something like random_number@mydomains.com rather than user_x@his_email_service.com
Can anyone advise on how I could go about setting this up?