使用Exchange Web服务将电子邮件标记为read。

I am subscribed to an email account using Exchange Web Services 2007 and processing attachments as new emails come in. I would like to mark those emails as "read" on the server after I'm done processing them, but I'm finding it's not as simple as setting the "IsRead" property to true. I've even tried the following:I am subscribed to an email account using Excha