Storing and transferring files with Google Drive is a good solution for when the file size is too large for Onedrive to sync and share (over 15 gb).
Navigate to mail.rams.colostate.edu
Click on “Log in to Google Apps” link on top of page
The next page will tell you that log in is not possible for your account, but you can still create one clicking on the “Create an Account” link
Accept the terms about having extra email account at CSU
Click on Create Rams Account button
Once the base account is created you will click the next button which creates an alias for your new @rams.colostate.edu account (it automatically created the same alias that I have for Office 365 email just with rams added to address)
Close your browser down and relaunch it then navigate to mail.rams.colostate.edu