Item.Id 和 EmailMessage.InternetMessageId 有什么区别

What is the difference between Item.Id and EmailMessage.InternetMessageId

EmailMessage.InternetMessageId and Item.Id有什么区别 提供的 EmailMessage 继承自 Item。以下哪一项是电子邮件的服务器 ID,如果电子邮件的文件夹发生变化,它必然会发生变化?

Internet 邮件 ID 由发送方 MTA(邮件传输代理)分配,是 RFC 规范的一部分,有关详细信息,请参阅 https://en.wikipedia.org/wiki/Message-ID. The ItemId is the Store identifier that EWS uses to access items see https://msdn.microsoft.com/en-us/library/office/dn605828(v=exchg.150).aspx

Which one of these is serverid of the email message which is bound to change if the folder of the email changes?

如果项目在文件夹之间移动或复制,EWSId 会发生变化,Internet messageId 不会发生变化,但不能保证唯一。