I receive e-mails from people looking for more information about helping the environment. So I created a form letter. To save myself some time - I created a webpage with a form. From their e-mail, I cut and paste their info into the form and hit submit. The script sends them a message with the info they were asking about, and sends me a different message with their vital info - name and email.
I would like to prevent duplication - should I receive multiple requests from the same person. To do this, I would like to know how to add a line (or lines) to the script - see attached - that would record their e-mail address to flat file database. Then, when I submit - it checks the addresses in the database for duplication. If the address is new - it sends, if not - it takes you to a page that says information has already been sent to this address.
I would like to prevent duplication - should I receive multiple requests from the same person. To do this, I would like to know how to add a line (or lines) to the script - see attached - that would record their e-mail address to flat file database. Then, when I submit - it checks the addresses in the database for duplication. If the address is new - it sends, if not - it takes you to a page that says information has already been sent to this address.