How do I send an email to all contacts listed in a category?

1. Begin composing a message in your Yahoo! Mail.
2. Type the category name in the To, Cc, or Bcc address box.

Once you send your message, Mail expands the category name to display all of the email addresses belonging to the people in the category.

Tip: If you don’t want the recipient of your message to see all of the individual email addresses, type an email address that you don't mind sharing in the To box, and type the category name in the Bcc box. Your recipients will see one email address and not the others.