Email software often mistakes messages sent to many recipients as spam and sends them to the junk mail folder. This can be an annoyance if it prevents you from receiving mass messages that you signed up for. In Mac Mail, a message will not be marked as junk if the sender’s email address is in your address book. To mark someone as a safe sender, add his address to your address book. Tips Writer Bio

How to Add People to my Safe Senders List in Apple Mail - 41