[Tickets #8922] Re: Sort messages by arrival date not working correctly

[bugs at horde.org]

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Ticket URL: http://bugs.horde.org/ticket/8922
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  Ticket             | 8922
  Updated By         | Michael Slusarz <slusarz at horde.org>
  Summary            | Sort messages by arrival date not working correctly
  Queue              | IMP
  Version            | 4.3.6
  Type               | Bug
-State              | Unconfirmed
+State              | Not A Bug
  Priority           | 2. Medium
  Milestone          |
  Patch              |
  Owners             |
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Michael Slusarz <slusarz at horde.org> (2010-03-19 12:12) wrote:

> It seems that IMP assumes that sorting the messages by UID is the  
> same as sorting them by arrival date. But this is not always the  
> case. For example if I copy an old message to an IMAP folder it will  
> get a new high UID but the arrival date stays in the past and should  
> be sorted accordingly.

You have an incorrect assumption as to how IMAP arrival times work.   
Arrival sort, otherwise known as the message sequence number, is the  
order in which messages are received in that mailbox.  If you copy an  
old message into a mailbox, that message "arrived" in that mailbox at  
the time you moved it, not the time the original message was sent.

It sounds like you want date sort, not arrival sort.