be subject to a claim for privilege的意思

问题描述:

be subject to a claim for privilege的意思
email里的保密协议写在最后的.原文是This email plus any attachments to it are confidential and are subject to a claim for privilege.感觉这里的be subject to跟我知道的那些意思都不一样,因为它不是受限于...不知道这里的be subject 还有整句话怎么翻译比较合适?

be subject to a rule/law 须遵守规则/法律
claim for privilege 索赔权
须遵守索赔权