E-mail is among the top productivity tools used by firms. But, as much as it has enriched professional life, attorneys often use e-mail inefficiently and even counterproductively.

To combat these ills, I submit a different kind of tip list. I won’t address common problems such as blank subject lines, urban legends and all capital letters; that has been done ad nauseam. Instead, I’d like to bring lawyers’ attention to some less well-known e-mail annoyances — the ones that can make a legal assistant’s day an exercise in hair-tearing.