Patch Reboot notification on Contact E-mail Field

Patch Reboot notification on Contact E-mail Field

Hello, we would like to input an e-mail address somewhere in the device that will notify when a reboot is pending. I see there is a contact E-mail in the Device notes and not sure If I can use this as the variable. I don't believe adding "Contact Email:$CustomField(Contact Email)" in the to field will work. Any advice?

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