Personally I think there is a much larger issue at play here and that is security of your communication with your therapist.

If his email can be hacked or spammed, then perhaps he should invest in something in order to keep you safer.

No email is completely secure, in fact a lot of therapists/physicians won't use it at all to discuss anything.

But this breach of security is the elephant in the room to me.

FWIW the dean of the school of medicine where I worked got hacked and his email sent out a picture of a naked woman jumping into a hot tub containing a chimpanzee, and two other men. This email went to his entire faculty.

Let me tell you, some IT people really got slammed over that one and a whole new email system was put in place.

The really funny thing was that the email still contained the "this email is private and confidential....." clause at the bottom!