When a deprecated setting is used, a warning is posted but it doesn't indicate the flag or the env to be used, but rather its name.

PrintDeprecatedOptions() is where this is defined. We should probably print the CLI flag, env var name, or a link to the documentation.

WARN: Notifications: Email Auth: Password is deprecated, please use Email Auth: Password instead.
WARN: Telemetry (backwards compatibility) is deprecated, please use Telemetry Enable instead.