During the past few months the volume of non-spam e-mail I receive has slowly diminished. I'm receiving fewer e-mails from editors and fellow writers, and I've pondered the reasons for the reduction in volume.
I was once quite active on a couple of Yahoo groups--including serving as president of the Short Mystery Fiction Society and, thus, moderator of its Yahoo group--but have limited my participation in on-line discussions this summer.
I'm producing less work on-spec and thus seeing fewer rejections (which is the kind of editor contact I'd prefer to avoid!). At the same time, a couple of editors with whom I had good on-line working relationships have moved on (and not always by their choice), and I've not developed that kind of relationship with their replacements.
On the other hand, it could just be that good weather and summer vacation has taken everyone away from their keyboards and the volume of e-mail will increase as we move into fall.