You can edit a person's details that you have stored in your address book, by doing the following:
Click the Address Book button in the Read Mail window or Write mail window.
Select the Address Book entry that you want to edit and click the Edit button.
Enter the information you want to change and click the OK button.
Note
You can delete an address by selecting the address entry you want to delete and clicking the Delete button.
You can also edit the person's details by selecting the Group name and then clicking the Edit button and entering the new information.