You are using SBCGlobal email account and cannot send an email that is so urgent for you to send to your contacts. It is because of a few measures like poor internet connection, server error, etc. You can fix all these errors by using your SBCGlobal Email Account by using a few troubleshooting steps. Update the browser, computer and driver. Delete all emails coming from unknown sources and restrict these unknown senders. If again, the same issue is facing, then call SBCGlobal Email Customer Support Phone Number to eradicate it quickly.