Microsoft
MicrosoftThank you for your feedback. We will consider your request to manage signatures. Feel free to add this to Outlook.uservoice.com.
Regarding GCC mode, if you are an Office 365 administrator, please see the Message Center post MC175769 from March 18, 2019.
By April 1st, US Office 365 Government Community Cloud customers will be using the native Microsoft sync technology that directly connects Outlook for iOS and Android directly to the FedRAMP compliant Exchange Online back end architecture. At that time, the set of services and features that will be accessible from Outlook mobile for GCC customers will be controlled by an Exchange Online organization setting (accessible via PowerShell cmdlet) and therefore the GCC mode toggle will be removed from the app settings. Outlook mobile will leverage the Exchange Online organization OutlookMobileGCCRestrictionsEnabled parameter value in the Office 365 Admin Center, not the Outlook mobile GCC mode toggle settings.
For more information: https://aka.ms/OMGCC