how to mark a sender as safe in outlook
1 In Outlook, go to the Home tab. 2  Click the Junk button. 3  Choose Junk E-Mail Options from the drop-down list. 4  Go to the Safe Senders tab. 5  Type in either the email address or the domain name you wish to add. 6  Click OK. 7  Express. 8  In Outlook, go to the Tools menu. 9  Select Address Book.