You can choose SpamSieve - Change Settings from Mail’s Message menu to
customize SpamSieve’s behavior in Mail.
The settings are:
- Which mailbox should spam messages be moved to when you use “Train as
Spam”?
- Should messages marked using “Train as Spam” be stored in a local
spam mailbox (rather than on the server)?
- Should “Train as Spam” mark the messages as read?
- When you use “Train as Good” on a message in the spam mailbox, should
the message be moved back to the inbox?
- When you use “Train as Good” on a message in the spam mailbox,
should the message be marked as unread?
- Should incoming spam messages be colored according to how spammy
they are (darker means more spammy)?