Auto-select encoding for outgoing messages

Supported on: At least Windows Server 2008 R2 or Windows 7

Registry

HKCU software\policies\microsoft\office\16.0\outlook\options\mshtml\international

Value name: autodetect_codepageout

Enabled: autodetect_codepageout = 1

Disabled: autodetect_codepageout = 0

Checks/Unchecks the corresponding UI option.