In addition to getting a free email account with the creation of an eID, you get a free email alias, formatted using your first name and last name as follows:
CSU undergraduate students
First.Last@rams.colostate.edu (e.g. John.Doe@rams.colostate.edu)
CSU graduate students, faculty, staff and associates
First.Last@colostate.edu (e.g. John.Doe@colostate.edu)
This is not an email account itself, but rather it is an email address alias that will automatically forward mail to the email account specified in your eID, even if your email account isn't on a CSU server.
You may Change Your First.Last Email Alias if you would like to change the first part of your First.Last alias (e.g. from Jonathan.Doe to John.Doe).