Troubleshooting inbound email messages reaching SN instance with a delayIssue In some occasions external email messages from third party applications arrive late in ServiceNow instances. Intermittent delays are traced between the email send time and the processing time in the instance.ReleaseAllCausePop3 account or congestion on the third party external servers processing or sending the email messages prior to these being received in the ServiceNow instance.ResolutionUsing "MS Header Analyzer" on https://mha.azurewebsites.net/ it is possible to review the message headers of the received emails, and generate a view of path that the messagehas followed prior to being received by the Servicenow instance. This will show specifically where and how long the message processing occurred on each email relaying host.1) Open the message in the sys_email table: and select the header information: 2) Select the header information and copy it to the Clipboard, 3) Open: https://mha.azurewebsites.net/4) paste the header information5) Click "Analyze Headers"This will generate a report similar to this:Providing the details of the path the message took and how look it took on each host, this would then show where the delay was caused.Related LinksDelay to send and receive emails due to "Server busy. Please try again later" Verifying the outbound mail server received the email Enabling email delivery using SPF records to allow SN mail servers