In the HBR Blog, email may be easier, but it is less impactful:
" ... But the bigger need is just for more live conversations to occur, period. This is especially true when people are trying to resolve a conflict or communicate an important business decision. There is a rising and unproductive trend towards people trying to do digital conflict resolution. The de facto path for issue resolution seems to be increasingly via email. More accurately, email has become a convenient mechanism for issue-avoidance. It is easier, quicker, less stressful, and less confrontational to have critical or challenging issues sent over email versus a live one-on-one with a counterpart.... "