Use this signature for OneNote email: registry value signatureUserHKCU\software\policies\microsoft\office\16.0\onenote\options\other

Policy ID: L_UsethissignatureforOneNoteemail
Scope: User Configuration
Supported on: At least Windows Server 2008 R2 or Windows 7
Source: Microsoft 365 Apps / Office Administrative Templates (version 5568.1000)
Category: Microsoft OneNote 2016 › OneNote Options › E-mail

Registry

signature

REG_SZUser

HKCU\software\policies\microsoft\office\16.0\onenote\options\other Current key

Enabled value: Depends on the option value
Element: Enter signature to use for OneNote e-mail
Value type: REG_SZ

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\software\policies\microsoft\office\16.0\onenote\options\other]

; Value names and types follow the ADMX. Replace <enter value> below with your own data
"signature"="<enter value>"

CMD

:: Value names and types follow the ADMX. Replace <enter value> below with your own data

reg add "HKCU\software\policies\microsoft\office\16.0\onenote\options\other" /v "signature" /t REG_SZ /d "<enter value>" /f

PowerShell

# Value names and types follow the ADMX. Replace <enter value> below with your own data

New-Item -Path 'HKCU:\software\policies\microsoft\office\16.0\onenote\options\other' -Force | Out-Null
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\onenote\options\other' -Name 'signature' -PropertyType String -Value '<enter value>' -Force | Out-Null