I use formmail.pl and some shtml forms to get user input before allowing them to download software. This is an attempt to get them to opt-in to our monthly newsletter (no spamming), The problem is that could enter any address and then be forwarded to the download page, I would like them to enter a correct email address that a download url gets sent to in order to ensure they enter a valid address.
How would I go about this?
I can't use a simle auto-responder because the email i receive from the submitted form is actually from our server, not the user, so any auto response would go to the server.
Lost here, any help?