First and foremost, ensure that your account’s validity hasn’t expired yet. If it is still valid, check if your internet connection is stable enough to proper email service functionality. Another reason why is SBCGlobal mail not working is improper email settings, so make sure that your devices contain correct email settings. You can delete all cookies and cache to make more room for new temporary files that help is launching the page sooner than without cache. Lastly, ensure that your device is compatible with your email service.
Visit: https://contactforhelp.com/sbcglobal-email/