How can I open an additional mailbox (departmental/club/shared) through myRedDragon?
Faculty/staff accessing additional mailboxes:
Log in to myRedDragon normally, click on the email link on the right side of the page. That should open your mailbox in a new window. If you are using Internet Explorer, click on your name in the upper right hand corner of the mailbox:

Now in the Select mailbox field type in the account you wish to access. That mailbox should open in a new window.
If you are using a non-Internet Explorer browser (Firefox, Opera, Safari) simply append the email address that you wish to access to the URL in the address bar and hit Enter:
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If you are a student accessing mailboxes on the Exchange 2003 mail server:
IE, Firefox, etc:
Log in to myRedDragon, click on the email link, and append the email address to the end of the URL:
If you are a student accessing mailboxes on the Exchange 2007 mail server:
IE, Firefox, etc:
Log in to myRedDragon, click on the email link, and change the URL to https://tyler.cortland.edu/owa/address@cortland.edu:
If you are prompted with a login screen, use your user name and password.