MailKit MessageId is returning null

Question

var summaries = IMailFolder.Fetch(
                            uids,
                            MessageSummaryItems.UniqueId |
                            MessageSummaryItems.Envelope |
                             MessageSummaryItems.BodyStructure |
                            MessageSummaryItems.Flags);

One particular email is returning Envelope.MessageId as null. Looking into Gmail the message id is:

<1300932178.eb40.USPR.1342897.1764162864MSOSI1:43OSIMS@myusairways.com>

is this a bug or this is not the right way to get the message id?

BTW: MessageId is coming correctly if I include MessageSummaryItems.Headers. However, because I am getting information for tens of thousands of emails, I want to keep the payload to the minimum. — Samuel, Apr 24 '19 at 18:43
I think it might have confused with the ":" in the message id... — Samuel, Apr 24 '19 at 18:51

jstedfast · Answer 1 · 2019-04-25T22:19:27.693

That is the correct way to get the Message-Id value, but as you noticed, the Message-Id header value contains an illegal character.

That said, try to get a protocol log to figure out if your IMAP server is sending the Message-Id header value in the ENVELOPE response or not.

If it is, submit a bug report to https://github.com/jstedfast/MimeKit/issues and I will work on a fix.

Update: Try using https://www.myget.org/feed/mimekit/package/nuget/MimeKit - just make sure to install a version >= 2.1.4.5

MailKit MessageId is returning null

1 Answers1