I wish my dentist would take a lesson from my T and not call me, ever: he calls once to remind me of an upcoming appt, and then a request to call back in order to confirm I am going to show up! I mean, if he has that many no-shows, bother those people, not me!

I am always a bit skeptical of Ts who don't seem to understand the relationship between the therapy frame and boundaries, and who persist in seeing boundaries as "should nots." As FJ said, it's much more nuanced than that, and boundaries don't all serve the same purposes. There's a difference between a T not accepting e-mails from anyone as a self-care issue, and a T deciding that e-mails serve no therapeutic purpose for one client, while being a valuable motivator for another client. Rules can't substitute for clinical judgment, they can only be starting points.