Our email has always worked fine until this morning. We can't send or receive. We get no errors or bounce backs. We are missing out on sales right now and clients are frustrated. I checked and our MX is correct and nothing has changed from our Registrar. We normally use Outlook but the same problems happen from webmail as well. Is Zoho having issues? I need an ETA to tell my clients when this sill be resolved. Thanks!

Domain is "heatersales.ca"