The steps detailed below take some work to implement, but they will save a lot of time and frustration in the long run.
Most people just reply to an email without first adding it to the address book.
This is fast, but may make it so that you don't have the address available next time you need to send that person email. Use the address book feature and you will always have the ability to send an email to individuals or groups without quickly and efficiently. There are two ways to enter an e-mail address into your address book. This updates your address book with the sender's name and e-mail address without your having to type a thing. Finally, you may have a group of people, such as your family or a specific interest group, that you consistently send e-mail to en masse.