My T always responds to my text or email.
Most times it is an emoji, just acknowledging receipt.
Thats just fine for most stuff I might send.
Often, a single line of encoragement.

Only a very few times have we had a 'conversation" via text.
Once when I received results of DHs cancer diagnosis and I was freaking out a bit.
Another when I was having bad anxiety on anniversary of my mothers traumatic death.

Once in a while I will send info that I want to discuss mext session but want it out of my head immediately.
Then I will tell her no reply needed.