If you happen to out of an evening with a member of HR, and demoing the features of your phone, do not use it to collect your personal emails.
Because the person over at the competition that you were corresponding with before Christmas about, er, alternative employment opportunities, will choose that very moment to send an email asking after you.
And that inevitably in little old Wellington said HR person will not only know said person from the competition, but will be out on the turps with them at the weekend.
And you don’t want that. So be warned.