sending email to database impossible?

[Bill]

Is it possible to somehow alter a field in a mysql database by sending
an email to the server?
I have a script that sends out notification emails to an individual. He
wants to receive them continuously until he decides he has seen enough of
them. Then to stop receiving the emails he has to use his browser and go to
the web page that is sending him the emails where he clicks a button that
alters a field in a database that acts as a flag.
Would it be possible to arrange things in some way so that all he has to do
is fire off a reply to the most recent email he has received to toggle the
flag.
I don't see how this could be done, but thought I should ask here before
dismissing the idea.
Thanks
Bill

[Aggro]

Bill wrote:

Would it be possible to arrange things in some way so that all he has to do
is fire off a reply to the most recent email he has received to toggle the
flag.

Yes, but that has very little to do with databases. You will need to
find a way to retrieve the e-mail from server, then parse it to tell
from who it came from at what it should be done with, and then according
to that, execute a query, similar to executed if user presses the button.

Only thing related to databases is the query, which you already seem to
have. Other things are related to the system and programming languages
you are using and are off topic in this newsgroup.