Event Info in Email Subject Line

Instead of the generic "[ORGANIZATION] Event Registration Confirmation" in the subject line of every email, including information about the event date or time would make the subject more relevant and would increase the likelihood of the email being read by the volunteer.

"[ORGANIZATION] Registration on Feb 6, 2013 at 6:30pm"

Not quite sure if that's the ideal wording but just an example of how it could be changed.