By default, users can flag an e-mail that they send to help them remember to follow up on it later. The flag is not sent to the recipient. By enabling this setting, this feature is turned off.
| Registry Hive | HKEY_CURRENT_USER |
| Registry Path | software\policies\microsoft\office\15.0\outlook\options\flagging |
| Value Name | disablesenderflags |
| Value Type | REG_DWORD |
| Enabled Value | 1 |
| Disabled Value | 0 |