Yahoo Mail is a free, Web-based e-mail service from Yahoo. You can use Yahoo Mail to send and receive e-mails, store e-mail addresses and integrate with other mail services. You can configure Yahoo Mail to personalise its many functions. For example, you can set Yahoo Mail to automatically save a copy of your sent e-mails. You can update, change or undo e-mail functions through the Yahoo Mail "options" menu.
Log in to your "My Yahoo" account at my.yahoo.com.
Click the "Mail" icon that resembles a small envelope.
Click the down-arrow by "Options" to display a menu. Click "Email Options" to open a dialogue box.
Select the functions you want to modify from the left-hand list. For example, click "General" to open a list of functions for your basic e-mail, "Spam" to set or remove spam filters or "Vacation Response" to enable or disable automatic responses to new e-mail messages.
Click the button next to the individual e-mail functions that you want to enable or disable. An empty button indicates the function is turned off and a filled button indicates the function is turned on.