how to get my iPhone to notify me of an email
Get notified when you get a new email
Are you waiting for answers to an important email? There is no need to keep a watchful eye on the Mail app. iOS does this for you.
If you are awaiting a reply to an important email, you are probably used to keeping a close eye on your iPad. You don’t have to worry about that anymore. With the In iOS 8, it is possible to let the system do the monitoring. So you get a message when the expected mail is ticking in.
How to do
Find the mail thread which you expect to get important replies and press the button that looks like a small flag and then click “Notify Me.”