I'm not quite clear what functionality you want to have from this.   If these log statements were dumped, would you be looking to grep them out?  And do you need the list of emails that *were* sent, or those that weren't, or both?  (Because we also took out the dumping of individual email addresses to whom emails were not being sent due to errors.)  Is this something you would enable on your site (Stanford), as a global setting (i.e. envs.json/aws.py)?