How to notifications from my friend on twitter when she makes a tweet?

[Mark]

I have a friend on twitter,every time she makes a tweet,I don't get notified in my mail,I have to go on her profile, to find that out,is there anyway I could be notified when she makes a tweet
and how will i know if shes online or not

[Niko]

No. This is not possible. And it is very creepy.

[Daniel]

Twitter Does Not Have this Kind of Notifications you Can Not Get a Notification When She Makes a Tweet you Have to Visit Her Twitter Profile to Find out if There is a New Tweet