By default, a warning message is displayed before Outlook items are permanently deleted. By disabling this setting, you can change this behavior to not display the warning message.
Registry Hive | HKEY_CURRENT_USER |
Registry Path | software\policies\microsoft\office\14.0\outlook\options\general |
Value Name | warndelete |
Value Type | REG_DWORD |
Enabled Value | 1 |
Disabled Value | 0 |