[Zope] Modification Reminder

[Niclas Kuehne]

I am working on a project that requires people to update their
(HTML-)documents about once every 6 month. Is there a Zope "plug-in" of any
kind that gives me the opportunity to check all the files in a specific
folder and it's subfolders for the modification time and send an email to
the user who uploaded/created it if the modification date lies back more
than 6 month? Has anyone any experiences with a problem like this and could
offer a solution? Thank you very much for any help.

Niclas Kuehne