Finally! The 23 Unwritten Rules of Email August 28, 2018 by Jan Shawkey "It wasn't until I helped my college-aged brother hack (er, set up) his inbox and explained some of the nuances of this ubiquitous method of communication that I realized how many unwritten rules of email have developed over the years...You must login or register before you view this content. See the 23 rules by Alex Cavoulacos (photo, left), founder of TheMuse.com . . .