Adding a List
Lists are groups of contacts to whom you want to send the same email message. Create a list to quickly send a message to up to 100 email addresses at once.
Here's HowOpen your Yahoo! Address Book.
Open the "Add List" page in one of the following ways:
Click the "Add List" button.

Click "Add" next to "Lists" on the sidebar.

The "Add List" page appears.
Enter a name for the new list.
List names cannot contain spaces, commas, or single or double quotes.
To add a contact to the new list, select it from the list on the left or type the contact's email address in the My Contacts field. Then click the "Add" button.
The selected contact name appears on the new list on the right. The contact is also added to your address book if it is not already included there.
The contact is removed from the current list only, not from your Yahoo! Address Book.
When you finish adding contacts to the new list, click the "Save" button.