What is the difference between messages marked "SPAM" and "QUARANTINE" in the logs?

[magicspam]

Messages marked as "SPAM" in MagicSpam logs are messages that have triggered policies/BMS lists that are fully enabled - "ON", in MagicSpam admin-interface panel. Such messages are fully rejected.

Messages marked as "QUARANTINE" in the logs are messages that have triggered a policy or a BMS list in the "FLAG" mode, and as such are passed to the customer's Mailbox, where they can be reviewed and excluded if needed.

Whether the quarantined message will be delivered to Inbox or Spam folder, depends on the settings configured in the following section in MagicSpam admin-interface panel:

Anti-Spam / System / Options / Advanced Options

This way, the worst of the worst spam is rejected fully while other spam emails from valid senders, e.g; unsolicited newsletters, etc... will be delivered to the customer as a quarantined email.