Changes have been made in Git for this ticket:

Request #3402 - Add support for '$Forwarded' IMAP keyword

http://git.horde.org/diff.php/imp/docs/CHANGES?rt=horde-git&r1=4b75c91ba3c108bf447725e207daa7c8217aebb0&r2=b4cc0cff3495af6da6d84d3c12a38cba48b5aae9
http://git.horde.org/diff.php/imp/lib/Compose.php?rt=horde-git&r1=755891fc5613924d6be74e0a55fb8e3aefb75af6&r2=b4cc0cff3495af6da6d84d3c12a38cba48b5aae9
http://git.horde.org/diff.php/imp/lib/IMP.php?rt=horde-git&r1=6c5d78042f5e4c84777d95f7b986ed8c68178cde&r2=b4cc0cff3495af6da6d84d3c12a38cba48b5aae9
http://git.horde.org/diff.php/imp/lib/Views/ListMessages.php?rt=horde-git&r1=c2ce6a16f93ba0e3a98d5134b4b68f5fef14752a&r2=b4cc0cff3495af6da6d84d3c12a38cba48b5aae9
http://git.horde.org/diff.php/imp/mailbox-mimp.php?rt=horde-git&r1=2bfcb48ac4046875fee8dfa10ed2c850150dec51&r2=b4cc0cff3495af6da6d84d3c12a38cba48b5aae9
http://git.horde.org/diff.php/imp/mailbox.php?rt=horde-git&r1=1ab28217cb086bd04c53c45e400c10198dfc6961&r2=b4cc0cff3495af6da6d84d3c12a38cba48b5aae9
http://git.horde.org/diff.php/imp/message-mimp.php?rt=horde-git&r1=d7f793427c092e67d8e8461caf2f4cd368c9f4bd&r2=b4cc0cff3495af6da6d84d3c12a38cba48b5aae9
http://git.horde.org/diff.php/imp/message.php?rt=horde-git&r1=9cd2bfdc9a3d6ad28195ced4ee9d7ab6ca3600d2&r2=b4cc0cff3495af6da6d84d3c12a38cba48b5aae9
http://git.horde.org/diff.php/imp/templates/mailbox/navbar.html?rt=horde-git&r1=494134b0cb53996bc9815e438ac7bf14bd3fea50&r2=b4cc0cff3495af6da6d84d3c12a38cba48b5aae9
http://git.horde.org/diff.php/imp/themes/screen-dimp.css?rt=horde-git&r1=99c47fb5b74d0acee293eaf6db66e4ea58bdc9c3&r2=b4cc0cff3495af6da6d84d3c12a38cba48b5aae9
http://git.horde.org/diff.php/imp/themes/screen.css?rt=horde-git&r1=0ce47ed65bf6ec3969f412b5427625ebc8a44c60&r2=b4cc0cff3495af6da6d84d3c12a38cba48b5aae9

Added to IMP 5.

I smell the new IMAP library...

Well maybe we get the necessary information from ext/imap one day more 
effectively, stalled until then.

Any reason not to close this ticket then?

Still lingering around on my server, but it will probably never make 
it into CVS. It's too ugly, kills performance, and probably breaks the 
imap cache.

What's the state of this, btw?

Yeah, I just noticed that. The only function that retrieves these 
flags is imap_header() which doesn't do what you expect from it's 
name, but retrieves more or less every message's full headers and 
partial bodies of a complete mailbox. Guess how efficient this is...

Anyway, I got it working now, but it probably should be enabled with 
mailbox cache only, and only on small installs.

Cool. FWIW, the thing that's held me up in the past is retrieving them 
- we can send whatever we want with 
imap_setflag_full/imap_clearflag_full. But there isn't an imap_* 
function for directly retrieving flags.

I  just noticed that Cyrus has a predefined non-system imap flag 
called $Forwarded, maybe we can use that. I'm working on setting 
custom flags atm anyway.

True. I'm also fine with rejecting this patch, but such a feature has 
been asked for many times and the patch never has been discussed.

I have serious reservations about the suggested implementation. At the 
least this should be done using the mailbox cache instead.

I'm cleaning up my mailbox, here's an old thread:



Am Donnerstag, 9. Juni 2005 17:20 schrieb Chuck Hagenbuch:

Hmmm, I use thunderbird for my work mailaccount and mark messages as forwarded

and I give them user defined status, too.



Recently I connected to my work mailbox from a newly configured thunderbird at

home and all the flags were there, even the user defined ones. So these flags

have to be on the server somehow (it's a cyrus).



Implementing server side user defined status flags would be better that any

hack.



Quoting Chuck Hagenbuch <chuck@horde.org>:

Quoting Simon Detheridge <simon@widgit.com>:

It seems like this should be trivial. Is there an option I'm missing, or do I

need to modify a php file somewhere?

You'd have to implement it. On large mailboxes it'll be quite slow.

I had a bash at it. I've attached a patch that provides the icon and 
works on my

system. I expect all the seasoned developers will be horrified with 
the way it's

done, as I've not had a stab at playing with horde code before. ;-)



It *will* stop my users asking for it however.



There are problems with reading fhe 'forwarded' state from the history, for

example you can't "mark as" forwarded, or similarly unmark... Not 
without doing

some history-mangling, which seems incredibly unwise.



I'm thinking that a hack like this could be used to add category 
information...

By adding it to the maillog for the message in question. There'd be no way to

search on it though. It'd probably need a separate table...