There can be multiple reasons behind this problem. You must consider a few things while you are trying to resolve this issue like, you must have a stable internet connection, the browser you are using should be compatible, and the browser should be up-to-date. To fix SBCGlobal email not working 2020, you can clear the cache and cookies from your browser, disable add-ins or extensions, or switch your browser altogether to fix the issue.

More details: SBCGlobal Customer Service