When we add users to JSM they are getting a email from opsgenie@opsgenie.net with the email:
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Subject: "An account administrator has invited you to Opsgenie, Modern Alert & Incident Management from Atlassian"
%USERNAME%
Welcome to Opsgenie!
An account administrator has invited you to join Opsgenie's alert management service to receive notifications via email, mobile, apps, SMS, and voice.
Getting Started may be a good place to start your evaluation of Opsgenie.
Can we help you with anything else? Please contact us with any questions, comments, or concerns.
Activate Your Account
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So how do I turn this off or modify the content so that users that will not be using the Opsgenie portion of their JSM licensing aren't sent these emails.