Whenever you have new (i.e. unread) emails, the number of new emails is displayed in brackets in the menu, for every folder. Mail folders are displayed in the menu, under the Mail link, when the mail submenu is open (click on the + sign if it's not).
Next to the Mail link is reported the total number of new emails in all the folders.
To read your email, check on the name of a mail folder.
You can also click on Home to have an overview of your unread emails, messages and your appointments and tasks for the day, in a single page.
When you open a mail folder, a list of emails appears in the right-hand side of the window.
If there are emails listed, click on an email subject to view the email in the lower half of the window.
If you double-click on the email, the email will open in a new window.
Emails listed in bold are unread emails.
You can change the view (split, only listing, only email message) by clicking on the icons in the top right corner of the window. See Full screen and split views