Unverified50% confidenceTradeoffExact time
工作量证明反垃圾邮件方案需要发件服务器、收件服务器、邮件客户端三方同时支持新机制，任何一方缺席都会导致方案失效
1
Sources
50%
Confidence
Long-term
Relevance
7/16/2026
First Seen
Sources
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