On Dec 01, 2014, at 05:45 PM, Aurelien Bompard wrote:

I'm really interested in any insight on this issue. Thanks for reading all that :-)

To be honest, mailman.email.message.Message should really go away. It's a terrible, and old, hack. A few things *are* useful, such as pickle support (required for the qfiles to work), and the convenience properties .sender and .senders. Of course, the convenience subclasses (e.g. UserNotification and OwnerNotification) are helpful too, but in a different way.

This is yet another reason why I'd like to get the core on Python 3. Then we can ditch most of this hack of a subclass and rely on the behavior of the Python 3 email package, which should DTRT.

Not sure that's helpful for your immediate problem though. ;)

Cheers, -Barry