What does Mail.app use to decide if an email is Junk Mail

mail.app

Does anyone know how Mail decide junk message, in addition to trusting spamassassin header? For example, if I mark a message as junk, what criteria does Mail create?

Best Answer

Mail.app uses more than one approach to junk mail.

  • Some spam gets reported by other users.

    • You can forward your junk mail to spam@icloud.com and it gets added to Apple's filtering system.

  • Mail servers sometimes mark messages as spam.

    • When a tool like spam assassin has marked an incoming message as junk, Mail.app respects that and passes it to the junk folder automatically.

  • Mail.app also supports custom filters.

    • You can make your own filters that will direct junk mail into the junk folder.
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