Redemption RDOMail丢失用户属性

Question

我在发送电子邮件时设置了我的用户属性。当我将它发送到交换机外的电子邮件（gmail或yahoo）并获得回复时，它会丢失它的属性。有什么理由吗？

方法1： 组： m_RDOMail.Fields [         ＆＃34; http://schemas.microsoft.com/mapi/string/ {00020386-0000-0000-C000-000000000046} / PropertyName＆＃34;] = value;

获取： object userProperty = m_RDOMail.Fields [                         ＆＃34; http://schemas.microsoft.com/mapi/string/ {00020386-0000-0000-C000-000000000046} /的PropertyName＆＃34;                         ];

方法2： 组： m_RDOMail.UserProperties.Add（＆＃34; PropertyName＆＃34;，rdoUserPropertyType.olText，true，rdoUserPropertyType.olText）; m_RDOMail.UserProperties [＆＃34; PropertyName＆＃34;]。值=值;

GET： RDOUserProperty userProperty = m_RDOMail.UserProperties [＆＃34; PropertyName＆＃34;];

Answer 1

Where does the property disappear? In the Inbox of the recipient? Outlook will not propagate custom MIME properties to named properties unless the mapping has already been done. But the MIME header will still be in PR_TRANSPORT_MESSAGE_HEADERS. Do you see it using OutlookSpy (click IMessage button)?