Kaxel
I am not sure what you're looking for. If you have a sprint air card and using email from Charter Communications you need to set your Outlook to use the charter Commmunications server.
Verizon provides a pass through access but if you are using the email service provided by Verizon they have a different setup. Infact I don't think I would use Verizon's email service.
If I did not have my own domain and email service through Go Daddy or I would use GMail.
I did a search on the Charter website and here is what I found.
For your Pop server on Charter use the following.
--Server Information: Incoming server pop.charter.net
--Server Information: Outgoing server smtp.charter.net
The website is here.
Charter Communications adding an account.
Hope this helps.
BC