From: "Jens Vagelpohl" <jens@zope.com> > an asynchronous delivery mechanism. see here for details: > > http://www.dataflake.org/software/maildrophost/ Ah, OK. But it doesn't cause any actual problems, right? Because the new _send() methods make more sense from an SMTP point of view. There's not point in passing all the headers, when only "To" and "From" is used.