Rereading the title of this entry, makes me think that maybe I have created my own problem... I feel weird/creepy/over protective emailing my advisees very often. Probably they would just ignore my email if I sent too many.... Instead I'm come up with a "reason" to send them an email. At the beginning of every semester, I look up the syllabus of the big, survey classes - bio, chem, econ, etc - and put the exam dates on my calendar. Then I have a justified excuse (at least in my mind) to send them an email before/after the exam. I also know when to expect a flurry of correspondence, i.e. after the first bio and chem exams of fall semester.