You want to know if you can use a different CloudSOC sysadmin that have the different email address as the ServiceNow.
Sometime due to the segregation of duty requirement, you cannot use the “same” user for CloudSOC and ServiceNow to activate the Securlet. This means your CloudSOC sysadmin cannot have the same email address as the ServiceNow admin.
You can activate the Securlet using a different CloudSOC sysadmin as long as you have already created another sysadmin with the email address matches with the ServiceNow admin you will be using to activate the Securlet. The process is: