Re: [Fetchmail-users] Retrieving read messages from IMAP server

[Matthias A. <mat...@gm...>]

Am 20.07.2014 20:57, schrieb Jerry:
> On Sun, 20 Jul 2014 18:17:42 +0100, Rob MacGregor stated:
> 
>> On Sun, Jul 20, 2014 at 4:34 PM, Jerry <je...@se...> wrote:
>>> On Sun, 20 Jul 2014 15:57:02 +0100, Rob MacGregor stated:
>>>
>>> Yes, I have. Using MS Outlook 15.0.4631.1002 on my laptop. Outlook is
>>> configured to use IMAP for the account in question. I can go to the
>>> webmail site and confirm that the message is still there; however, it is
>>> marked as read. Fetchmail will not not download it. If I first use
>>> fetchmail to retrieve the email, it is also left on the site and Outlook
>>> will retrieve it. I figure I must have something configured incorrectly.
>>
>> Please see section G3 of the FAQ:
>> http://www.fetchmail.info/fetchmail-FAQ.html#G3
>>
>> It lists the information we need to help you. A transcript that
>> includes a failure to retrieve a message that's on the server would
>> help too.
> 
> env LC_ALL=C fetchmail --nodetach -vvv --nosyslog

Thank you.

Unfortunately the original fetchmail design - and still present with
IMAP - was that it assumed to be the only client polling the mailbox,
and hence can - as of 6.3.X - only be made to operate in either of these
modes:

- do not download mail another client has marked "seen"

- download and flush all mail, but this means the /other/ client only
has a few messages, and only as they accumulate before the next
fetchmail poll.

One workaround is - counter to other recommendations that are valid for
different situations or needs - to use POP3 + UIDL.

Fetchmail's IMAP client, as of 6.3.X, only downloads unseen mail, unless
you set --fetchall - but you cannot usefully combine fetchall and keep
because that would duplicate all mail.