Gmail is one of the most popular email platforms around the world. However, users often complain about malfunctioning Gmail. They often find Gmail notifications not working. There is more than one fix to this issue: Keep your Gmail notifications in an on mode. In case, you are accessing the account from a smartphone, turn off the power-saving mode. Use the latest version of the Gmail app. Try to uninstall the app and then reinstall it after a while. Temporarily turn off the sync Gmail sync option and turn it on after some time. You can force stop the Gmail app too. Finally, Try turning off the battery optimization feature called Adaptive battery or intelligent battery.