We havesaid it before and this is nothing new so if your having problems with your iphone 6 email notifications not working its likely due to a recent update. First thing you should try is restarting your phone to see if anything changes. This is what most people do on instinct. Next thing you should try doing is going into the notification settings and click on email. Make sure all the notification options are turned on. If that doesn’t solve anything delete the email account you have attached to your iphone 6. Re add your email account and this will most likely solve your problem. If your iphone 6 email notifications are still now working as a last resort try resetting your iphone 6, but make sure you have all your data saved to itunes or your desktop.