"I don't believe in email. I'm an old-fashioned girl. I prefer calling and hanging up"

Sarah Jessica Parker is revealing her preference for standard interaction methods over modern ones. She is implying that she does not trust e-mail as a reputable type of communication, and instead chooses to interact with people through phone calls. This might be due to the fact that she values the personal connection that features speaking to somebody directly, or because she believes that emails can be easily misinterpreted. Her choice for calling and hanging up might likewise be a way of revealing her desire for more meaningful conversations, as opposed to the typically brief and impersonal nature of e-mails. Ultimately, Sarah Jessica Parker is revealing her preference for traditional communication methods over contemporary ones, and her desire for more significant discussions.