How can I read members emails?
 

And is there a way I can take away someones emailing privileges? I can't find either anyway and something has come up where it is important for me to be able to read them.

Are you talking about email or PM?

Email :)

To read the email of your members, you would need to get access to their email box. I doubt they will hand over login details to their email, so your only option would be to hack into their mail box. This would be an action that is considered illegal in most countries of the world.

so there is no hack to see what emails they have sent through my site? I just need to see what they have been sending through my site or make it so they can not send them in the first place.

Goto AdminCP: vBulleting Options -> vBulletin Options -> Email options
and there disable sending email.
Should do the trick.

As far as I know, emails send through vBulletin are not stored in the database, so you can't read them.

That will disable it for all members, which I'm guessing is not what's wanted.

Well, that was not very clear ;)
To bad, cause in the usergroups you can only disable the "Email to friend" option.
So it seems to be no-one or every-one.