Select the Options menu (in the top right corner of your Yahoo! Mail screen) and choose Mail Options
On the left side of your screen, choose Vacation Response
Check the box to Enable auto-response during your vacation (this will then display the necessary information to configure your auto response message)
Choose the dates that you’d like to set the auto response—most likely from today through a very far away date (unless you are using this for something specific, like a vacation)
Enter the body of your auto response message (including your AwayFind contact form link). If you copied this from the Auto Response Tools page, you can paste it here