People will be more open to communicating with you if you convey respect for them and their ideas. Simple actions like using a person's name, making eye contact, and actively listening when a person speaks will make the person feel appreciated. On the phone, avoid distractions and stay focused on the conversation.
Convey respect through email by taking the time to edit your message. If you send a sloppily written, confusing email, the recipient will think you do not respect her enough to think through your communication with her.