To access your email in your ClassLink portal, you'll first want to sign into "https://my.birdvilleschools.net"
Once you're logged into your portal, you'll click on "Office 365 Suite"
You'll then be taken to a login screen for Office 365. You'll type in your BISD email address and network password. When done, hit "save". You won't have to type in your credentials again after this first login.
Once logged into Office 365, you'll select the "Outlook" icon.
You'll then see the following screen:
Click on the link that's listed. You'll then be taken to the Outlook sign in screen. You'll sign in with your BISD network username and password.
Click "Sign In" and you'll have access to your email.