Stationery Fonts: registry value themefontUserHKCU\software\policies\microsoft\office\16.0\common\mailsettings

Policy ID: L_StationeryFonts
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 Outlook 2016 › Outlook Options › Mail Format › Stationery and Fonts

Registry

themefont

REG_DWORDUser

HKCU\software\policies\microsoft\office\16.0\common\mailsettings Current key

Enabled value: Depends on the option value
Element: Stationery font options:

Options
Item	Stored value
Use theme's font	0
Use user's font on replies and forwards	1
Always use user's fonts	2

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\software\policies\microsoft\office\16.0\common\mailsettings]

; Options (use only one)
; Use theme's font
"themefont"=dword:00000000
; Use user's font on replies and forwards
"themefont"=dword:00000001
; Always use user's fonts
"themefont"=dword:00000002

CMD

:: Options (use only one)

:: Use theme's font
reg add "HKCU\software\policies\microsoft\office\16.0\common\mailsettings" /v "themefont" /t REG_DWORD /d 0 /f
:: Use user's font on replies and forwards
reg add "HKCU\software\policies\microsoft\office\16.0\common\mailsettings" /v "themefont" /t REG_DWORD /d 1 /f
:: Always use user's fonts
reg add "HKCU\software\policies\microsoft\office\16.0\common\mailsettings" /v "themefont" /t REG_DWORD /d 2 /f

PowerShell

# Common: create the key
New-Item -Path 'HKCU:\software\policies\microsoft\office\16.0\common\mailsettings' -Force | Out-Null

# Options (use only one)
# Use theme's font
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\common\mailsettings' -Name 'themefont' -PropertyType DWord -Value 0 -Force | Out-Null
# Use user's font on replies and forwards
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\common\mailsettings' -Name 'themefont' -PropertyType DWord -Value 1 -Force | Out-Null
# Always use user's fonts
New-ItemProperty -Path 'HKCU:\software\policies\microsoft\office\16.0\common\mailsettings' -Name 'themefont' -PropertyType DWord -Value 2 -Force | Out-Null