I never paid for emails or phone calls. However, I do think it would have been reasonable to have therapists charge like I do as an attorney in 10ths of an hour. It makes it clear and understandable, it relieves guilt or worry about taking advantage of a therapist (which I never worried about but some others seem to do so), and it stops the therapist from being parental and puts them back as professional. I never wanted responses from the therapists, I wrote to get stuff out and away from me - to clarify. The therapist's responses were never better than her talking in person - so useless to me.