Email is very informal, a memo. But I find that not signing off or not having a salutation bothers me.
Judith MartinOne of the big no-nos in cyberspace is that you do not go into a social activity, a chat group or something like that, and start advertising or selling things. This etiquette rule is an attempt to separate one's social life, which should be pure enjoyment and relaxation, from the pressures of work.
Judith MartinFairness does not consist so much of everybody's doing the same thing, but of everybody's being willing to do something that others don't want to do.
Judith MartinVisiting the sick is supposed to exhibit such great virtue that there are some people determined to do it whether the sick like it or not. ... All visitors everywhere are supposed to make plans to depart if they observe their hosts visibly wilting or in pain, but this is especially true at hospitals.
Judith Martin