Change Junk Mail preferences in Mail on Mac
Use Junk Mail preferences in Mail to change options for managing junk mail and blocked senders.
To change these preferences in the Mail app on your Mac, choose Mail > Preferences, then click Junk Mail.
Junk Mail Behaviors
Enable junk mail filtering
Turn Mail’s junk mail filter on or off.
If your email account filters junk mail on the mail server, messages might be moved to the Junk mailbox even when this option isn’t selected.
When junk email arrives
Select what happens when you receive junk email.
The following types of messages are exempt from junk mail filtering
Don’t filter messages from senders who are in the Contacts app, you’ve previously corresponded with, or use your full name to address messages.
Trust junk mail headers in messages
Use any junk mail detection already present in messages you receive. Mail uses this information to more accurately identify junk mail.
Filter junk mail before applying my rules
Automatically run the junk mail filter before applying any rules that you created.
This option ensures that all messages, even those that your rules might move out of the Inbox, are evaluated by the junk filter.
Restore the default criteria for identifying junk mail.
Use this option only if Mail no longer handles junk mail as you expect. Resetting the filter deletes everything that Mail has learned from you about junk mail.
Set criteria that messages must meet to be identified as junk mail. This option is available only when you select “Perform custom actions.”
Enable blocked mail filtering
Block email messages from specific senders and control what happens to the messages when they arrive.
When email from blocked address arrives
Select what happens when you receive email from blocked addresses.
Email address list
The list of email addresses whose messages you’re blocking.
Add , Remove
Add an email address to the list of blocked senders, or remove one.
You can also add an email address to the list or remove it by clicking the arrow next to the sender’s name in a message, then choosing Block Contact or Unblock Contact.