Greetings Thad Wellington,
Would disabling the button "Allow content owners to subscribe other users to workbooks and sheets" be an interesting option?
As an administrator, you decide which sites allow subscriptions.
- At the top the browser window, click Settings.
- Select Allow users to subscribe to workbooks and views.
- Optionally, select Allow content owners to subscribe other users to workbooks and sheets, or enter an email "From" address and message footer.
- A site's "From" address and message footer are also used in emails for data-driven alerts.
- Click Save.
To specify the subscription schedules available to users, see Create or Modify a Schedule.
I'd invite you to read the two following links. let me know if you need further assistance
Lénaïc RIÉDINGER, Global Community Engineer Tableau
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