Comments on: Uploading emails using IMAP

By: Pawel Lesnikowski

Pawel Lesnikowski — Mon, 12 Dec 2011 13:12:31 +0000

@Daryl

Most likely Unseen flag can not by used in this way by your IMAP server.

Some server accepts negative flags in this context (hMailServer) others don’t (Gmail).

Please simply remove messageinfo.Flags.Add(Lesnikowski.Client.IMAP.Flag.Unseen) line:

Dim messageinfo As New Lesnikowski.Client.IMAP.UploadMessageInfo
imap.UploadMessage(“Inbox”, builder2.Create(),messageinfo)

It should work as expected.

By: Daryl

Daryl — Mon, 12 Dec 2011 08:32:16 +0000

Hello,
vb.net 2010

I want to upload an email using imap but mark it as unread

imap.UploadMessage("Inbox", builder2.Create())

works as described

BUT

Dim messageinfo As New Lesnikowski.Client.IMAP.UploadMessageInfo
messageinfo.Flags.Add(Lesnikowski.Client.IMAP.Flag.Unseen)
imap.UploadMessage("Inbox", builder2.Create(),messageinfo)

gives the error:

Expected more data request, but received: e9f70402ea13473e BAD APPEND

Any help would be appreciated – thanks

By: Pawel Lesnikowski

Pawel Lesnikowski — Tue, 10 May 2011 13:07:31 +0000

@Roberto,
1.
Uploading message to IMAP server is a different thing than sending email.
You should use SMTP server if you want to send an email.

2.
I don’t know how your code looks like, you might have simply reached Gmail’s 25MB message limit.
(Typically, encoding makes the size of the files grow slightly 19 * 1,33 = 25,27)

3.
Could you please contact us directly, and provide a bit more info (code, stack trace, log)

[Edit]
In fact I was able to upload 10MB, 15MB, 18 MB and 19MB messages.
With 19MB Gmail randomly disconnected without any error message.
Seems it’s their bug.

By: Roberto

Roberto — Tue, 10 May 2011 11:02:59 +0000

Hello,
I try to submit an email, through this method, with many attachments (total size approx. 19MB) and I jump an error: “Unable to write data to the transport connection: An error occurred during connection attempt because the connected party did not properly respond after a period of time, or failed to established connection and connected host has failed to respond. ”
You know that it can be? The mail then you are on gmail.
Thanks