New patch release 3.8.1 is available in our Stable Channel! Please update if you see "Something went wrong" when logging into a Google account.
Yes, that is possible!
There are two ways you can approach this.
1. Mute Mail notifications from the top menu bar for a specific amount of time.
2. Go to Settings > Accounts > Turn off notifications for specific accounts and then go to Settings > General > Functionality and make sure 'Show notifications' is turned on.