I am working on a html form for work, I need to make the Subject of the email which the form produces to be unique each time.
The subject is currently hard coded in, in the format of:<form method="post" action="mailto:an.address@work.co.uk?subject=Enrol Req"
I would like the subject to include a number at the end which will increase by 1 each time, so the subject will be completely unique each time. I'm guessing it would have to refer to an external file which would keep a track of the last number used, but as for how... I'm completely stuck... over to the experts!!