A T doesn't have to reach out outside of session to show they care. I know it happens with many Ts on here but I don't think it's the norm. So while it might be an added bonus for some people, I wouldn't use this to judge how much a T cares.

In my experience, Ts have shown me they care by giving me their full attention and responding thoughtfully, not judging, being flexible with their schedule (staying past their normal time or fitting me in short notice), not charging me for canceling last minute (like right before the appointment) and remembering information I've told them in the past (not everything but enough).

I'm sure there is more but that's what stands out.