Easily! First, set up your Yahoo! Mail account to check for new message in external accounts. Once setup, check your external accounts for new messages whenever you want. Here’s how:
Click on the account’s server name. It’s under “Check Other Mail” on the left side of your Yahoo! Mail page, alongside the color you chose when you set it up. See it? Clicking the server name opens that account in your Inbox and displays any new messages that might be waiting for you.
Yahoo! Mail doesn’t check your external accounts automatically. So, the only way to tell if you have new mail in one of those accounts is to click on the account’s server name and take a look.