Google Mail online help: About Safe Senders.
Yahoo Mail online help: About safe senders.
Open an email from Exodus Global Alliance, press the "Safe Lists" button and select "Add Sender to Safe Senders List".
Or open an email from Exodus Global Alliance. Right click on the From: Exodus Global Alliance line. A menu will open, select "Add to Outlook Contacts". Once Exodus is listed in your Outlook Contacts, Outlook will not treat email from Exodus as Spam.
Outlook Online Help: http://office.microsoft.com/en-us/suites/results.aspx?qu=safe+senders