I don't know how emails influence a therapist. I've seen mine for 3 years and emailed a lot for much of that time; now, not so much. It's been a natural transition that came from me, though, not my therapist. I think that's the way it should be. It probably takes a therapist who is willing to let emailing be helpful as long as it needs to be. Maybe yours got concerned that it wasn't helpful to you, in which case it would be good to talk to her about it and let her know your views. If you feel uncomfortable with emailing, though, that's more important.