https://www.googleapis.com/auth/admin.directory.user.readonly
Read access to list and view data of Users in your Google Workspace - required to provide data for placeholders in signatureshttps://www.googleapis.com/auth/admin.directory.domain.readonly
Read access to list your domains in your Google Workspace - required to apply signatures by Domainhttps://www.googleapis.com/auth/admin.directory.orgunit.readonly
Read access to list of Organizational Units in your Google Workspace - required to apply signatures by Organizational Unithttps://www.googleapis.com/auth/admin.directory.group.readonly
Read access to list Groups and Group Members in your Google Workspace - required to apply signatures by Group membershiphttps://www.googleapis.com/auth/admin.directory.userschema.readonly
Read access to data of created Custom User Attributes in your Google Workspace - required to use custom attributes in signatureshttps://www.googleapis.com/auth/gmail.settings.basic
https://www.googleapis.com/auth/gmail.settings.sharing
Write access to GMail settings of Users - required to set new signature for users in your Google Workspace (primary and not primary email adresses)
Permissions (OAuth scopes) required by signaturky
signaturky is requiring scopes that are listed below to provide signature management features: