Drobo 5N2 User Manual page 177

Note:
Once a mail server is configured, it is possible to switch between either of the Mail Server
configurations, but it is not possible to de-configure it. However, you can uncheck the Send
email alerts checkbox in the Dashboard Preferences page to stop receiving any e-mail alerts.
Related topic:
Modifying When to Send Email Alerts
Drobo5N2 User Guide 177