If Yahoo Mail isn’t working for you,there are various issues that could be the cause. In some scenarios ,both ad blockers and outdated internet browsers can stop Yahoo Mail from working.You should also make sure that you are sending mail to the correct address and haven't blocked anyone. Like most email clients, Yahoo Mail is also not perfect. If you're facing issues with Yahoo Mail on your Mac or PC and found something is fishy , follow our brief troubleshooting guide here to fix the issue.