This tutorial provides the steps to display Inbox when a user signs in to Yahoo Mail Account. Yahoo Mail interface by default displays the latest news and other features during the startup. But it also provides option to display the Inbox folder on startup. This can be done by making necessary changes in Yahoo Mail Options.
Sign in to your account and select Mail Options from the Option dropdown link.
In the Mail options screen, navigate to General tab.
To display the Inbox on startup, tick the check box with label as Show on startup. Click the Save Changes button available on top of the settings screen to confirm and apply the changes.