Email Suffix Matching Helper

In the App I am working on people subscribe from universities so they
tend to have very standard email addresses.

e.g. Durham University = @dur.ac.or or @durham.ac.uk

For some of these universities I want to display extra information
when the user logs in, but not for others and that information will be
university specific

i.e. If a user with first.name@durham.ac.uk logs in I want them to see
a Durham University specific imag on their homepagee, but if a user
from Newcastle with first.name@newcastle.ac.uk logs in they should see
a different image (or no image at all).

I would like to try and do this on email suffix recognition rather
than asking the user to specify their university at login if there is
an elegant way of doing so.

All suggestions welcome.

Thanks,

Dan

Where will the extra information live? In a model, or templates? Is it
static or dynamic content, managed or unmanaged?

School information can be attached to the user at login (in session,
for example), and/or stored permanently. It's easy enough to extract
the school information if login is via email address, or pull it from
the database if there are separate user names.