Abaolutely rubbish app! Push notifications are late multiple hours when the screen is locked, so I am missing extremely important work emails. On my iPhone and 7 year old HTC the gmail notifications are instantaneous but on my new Pixel 5 they don't *ping* until I manually unlock the screen hours later. Even though "adaptive battery, battery saver, background restriction, battery optimization" are all turned off gmail still doesn't sync when the screen is off. Too aggressive batter optimization!