How to find where is the delay in mail delivery from customer network to Service-Now Instance?SummaryYou might come across with the situation where users are complaining that they have sent an email to service-now instance, however, mail has reached the instance after some delay like 5 mins or 400 mins. Before raising a case with Service-Now support, you can check and find where is the delay.ReleaseAllInstructionsYou analyze the mail header of the affected email to find out where is the delay. Follow below steps: You can go to the instance sys_email table and open the affected email record.In this email record, go to Header box and copy the complete header from top to bottom and paste it in a notepad or any text editor.Open any mail header analyzer tool like https://mha.azurewebsites.net/Copy and Paste the full header whatever saved in the above text editor and click "Analyze Headers"It will give results something like this: Here you can see the "Delay" Column to understand how much is the delay and where exactly by looking at server addresses given in Submitting Host and Receiving Host column. If delay is at Service-Now instance end, you can raise case with servicenow support team.