the only bit that could be mildly concerning IMO is `dict(msg.message())` - msg is something that derives from django.core.mail.EmailMessage and its message() method should return a thing that derives from stdlib email.message.Message, which works with dict().  this may not be totally future-proof if some new exotic django email driver creeps into the picture and breaks something, but unit tests will shake that out if it happens.  overall, i'm not worried about this blowing up.