Go to System Preferences > Internet Accounts then in the list of internet accounts select Shaw and click on the minus sign ( - ) at the bottom of the account list. Then go to Mail > Preferences > Accounts and if Shaw still appears select Shaw and again click on the minus sign at the bottom of the list of accounts.
"All you've got to do is own up to your ignorance honestly, and you'll find people who are eager to fill your head with information" --Walt Disney
