EWS托管api:是否可以识别电子邮件或附件是否已加密? [英] EWS managed api : Is there a way to identify if an email or attachment is encrypted?

问题描述

EWS托管的api是否公开任何属性以标识某项(电子邮件/附件)是否已加密?

Does EWS managed api expose any property to identify whether an item( email/attachment) is encrypted?

推荐答案

 var isEmailOpaqueSignedOrEncrypted = false;

if (email.ItemClass == "IPM.Note.SMIME")
{
    var attList = email.Attachments.ToList();
    if (attList.Count == 1)
    {
        isEmailOpaqueSignedOrEncrypted = true;
    }
};

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