On IMAP .Net 45he Fetch Sequence doesn't bring a valid UID, (in the getimapuid and in the email.GetHeaderField("ckx-imap-uid"). When asked for the email.GetHeaderField("ckx-imap-isUid"), returns a contundent NO.
We are developing a web mail client and thus, can't keep bundles between requests.
Performace wise, Fetchsequence is slow and I'm worried it's requesting a message at a time.
So, my questions are: How I do to get a valid UID and how can I improve performance for the FetchSequence command.