Your milage may vary. I usually print long mails only. However, there is no confirmation whatsoever with the print command. It's there automatically, but it can be configured. Sooner or later users will ask you to change it for them.
Some people use the initials of the sender or even the whole name.
Most users never use it. Besides, there are better calendar programs around. This hardly ever changes. If my editor crashes then the temporary files will not remain in the overall tmp directory and thus be saved with other data at the next backup.