I must respond quickly.
FYI: When seeking assistance from a forum, it is best to remember that replies are made when it’s convenient for the people who opt to reply. If you need immediate assistance, you need to contact a paid IT support company or something.
In the meantime, take care and enjoy the rest of the iMore Forums.
I think the person means he must be alerted for certain emails immediately so he can reply as quick as possible.
Yes, you can. Under Notifications.