Python/Zope App for Email Activist Alert (WALD) tool?

[Chris Abraham]

Hi:

I am building a web-based application that intends to accept membership
(free) and each member will be alerted as to an event (generally Senate,
House, White House, corporation) via an email message that can then me
responded to via clicking back to a web site where you edit a form letter
and then submit this protest to be delivered to its intended politician.

Like Working Asset's Alert Network?

Is there an open souce web application like this?  Zope sounds perfect for
this! Whether attached to the ZODB or to MySQL.

Cheers & Thanks!

Chris