What process does ServiceNow have to handle mass email attacks?SummaryServiceNow has inbound rate-limiting by source IP to slow down delivery and not overwhelm the mail systems. Additionally, if inbound mail fills an instance's inbox, the ServiceNow system will stop receiving emails until the instance retrieves enough email via POP to leave room to receive some more inbound mail. No mail will be lost or undelivered, but such an attack could result in delivery delays until all the inbound mail is received and processed.