Inbox for Outlook

Inbox for Outlook gives you fast and instant access to Outlook, Hotmail, and Live mail directly from your toolbar.

It is the ideal app for instantly accessing your Outlook e-mail accounts (including Hotmail) without having to open your web browser. You just need to click on the icon in your toolbar and sign in with your Outlook/Hotmail/Live account. You can either run the app with a dock icon or without.