Mail loop preventing Inexing from completing?

[Devlin Kleber]

I'm doing a test upgrade of Jira to 7.12. on Ubuntu 18.04. I have the below JVM arguments applied to the Setenv.sh file.  

"JVM_SUPPORT_RECOMMENDED_ARGS="-Datlassian.notifications.disabled=true -Datlassian.mail.senddisabled=true -Datlassian.mail.fetchdisabled=true -Datlassian.mail.popdisabled=true""

How do I clear the mail from the loop so I can see if the index will complete? Where is the Mail stored? With the arguments in place I can't seem to do it through the WebUI like the other forums.

Thank you in advance.