| 摘要 |
Email opt-out enforcement is described. Received email messages are processed based on trust levels associated with senders of the email messages, such that email from more trusted senders is not scrutinized as much as email from less trusted senders. When a user requests to opt-out or unsubscribe from a sender's mailings, a record of the user's opt-out request is maintained. If the sender continues to send email to the user subsequent to the opt-out request, the trust level associated with the sender is adjusted to reflect a lesser degree of trust in the sender.
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