I have found that my younger daughter & started communicating better when we started texting back & forth. DH & I communicate by text a lot.

Elder Daughter has let me know she'd rather I not text her - she doesn't want to pay the 10 cents for messages. I respect her decision, but I don't necessarily like it. I'd like to send little love notes occasionally.

It's like email, the message can be ignored if the timing is not good - unlike phone calls, which always seem to come at highly inconvienent times.