I originally contacted my T through the psychology today website, and she e-mailed me back with her openings (from a personal email account).
I'm not sure exactly when it was, but soon in therapy, I called her because I was feeling terrible, and told her I felt bad for calling her in between sessions. She said it was fine, that people called and e-mailed her all the time. Since then, I use it sometimes to process a session, or if I'm having a bad day. I don't necessarily LIKE feeling dependent on her (at all), but she continuously reassures me that it is ok. She said that I process things by writing (as does she), and she always reads them even if she doesn't always respond (though she usually does).

I'm always scared I will crash into a boundary and annoy the ever-living s**t out of her. A few weeks ago, I had talked to her on the phone for a few minutes, but later that night felt so much worse, so I e-mailed, and then called her. I HATED myself the next day, and told her I felt so bad about all that contact. She said it is ok, that she knows when I do contact her, I am struggling; she just worries that if she can't write or email back (bc:life), that will feel worse.

That was reassuring, though.