Hello, We're using zope.sendmail to send mail from our applications. These applications are built on top of a more generic application library. It is this application library that depends on zope.sendmail. This application library listens for certain events and then can decide to send out an email. Obviously, when running the tests for the concrete application no mail is allowed to be actually sent. Zope.sendmail explains in its README.txt that the developer using zope.sendmail should himself take care of not sending emails (by setting up a test layer for example, that would register a no-op IMailDelivery utility). I had hoped that somehow zope.sendmail would automagically "detect" it is used during test runs and then would not send out any mails. I dug around in zope.testing and found the cleanup module that seems to provide (if I understand correctly) a global registry of things to cleanup after tests. I wonder if this could be extended to also be able to register routines for globally setting up stuff - in this case it could stub the mail delivery so that never ever any mail is actually send out when running tests. Questions: 1) how do others make sure that applications that directly or indirectly trigger sending mails do not actually send during testing? 2) am I on the right track thinking a "set up" equivalent of zope.testing.cleanup could be useful for these cases? kind regards, jw -- Jan-Wijbrand Kolman