I would like to know if there is some kind of software or add-on (preferably for Google Apps) that I can use to deliver different files according to someone's ID.
For example, in some sort of page, someone is asked his ID number. After it is inputted, a download of a specific file starts just for that user.
Any idea how to do this? I would like to avoid sending hundreds of different e-mails for each individual user.
Thanks in advance.