private async Task UpdateBackgroundService()
{
await ServiceLink.SetEnabledAsync(Settings.Default.BackgroundEnabled);
await ServiceLink.SetInitialDelayAsync((uint)Settings.Default.InitialBackgroundMailCheckInterval);
await ServiceLink.SetIntervalDelayAsync((uint)Settings.Default.BackgroundMailCheckInterval);
await ServiceLink.SetSupressFullscreenAsync(!Settings.Default.SupressNotificationsFullscreen);
Settings.Default.UpdateBackgroundSettings = 0;
Settings.Default.Save();
}