To prevent unwanted spam e-mail, some e-mail programs or services block messages from senders whose e-mail addresses are not in the recipient's Address Book or Safe Senders List. If you use one of these programs or services, be sure to add "agent@mydailyflyer.com" to your E-Mail Address Book or Safe List to ensure that you receive valued messages. For your convenience, we have provided instructions below for the most commonly used e-mail services or programs.