On 27 Oct 2016, at 8:02, Randy Bush wrote:
Right clicking on the 'Deleted Messages' folder in the left hand pane will present a contextual menu. Select Empty "Deleted Messages"aha! that's it. my use pattern is o i do not display MAILBOXES, only SOURCES o i am not subscribed to Deleted Messages, do you subscribe to your rubbish bin? :)
This is a use pattern encouraged by IMAP, although clients actually vary substantially in how they implement it. Total message deletion is never an atomic operation in IMAP, there is always an intermediate state whereby a message is poised for deletion but can be recovered.
If the IMAP server supports the MOVE extension, MM uses it to move a message (o set of messages) into whatever IMAP mailbox is the logical "Deleted Messages" mailbox for that account and expunges the message from the original mailbox all in one step. If the IMAP server does not support MOVE, it uses a non-atomic mechanism: copy the message to Deleted Messages, mark the original with the "\Deleted" flag, and expunge it. If you do not subscribe to the IMAP mailbox that MM has marked as the logical "Deleted Messages" mailbox for the account, it will accumulate messages indefinitely, never REALLY removing them.
Another way that some clients implement a logical "Deleted Messages" mailbox which doesn't really exist on the IMAP server is to keep track of what messages have the "\Deleted" flag and hide them from view in the IMAP mailbox where they really are. This model is popular with older and especially "offline mode" clients that maintain an independent local message store which is synchronized intermittently and does not perfectly represent server state. This is probably because the MOVE operation was not a standardized part of IMAP until 2013, making the non-atomic nature of logical message moves a source of difficulties.
The model of having a server-side trashcan is better fit for the modern reality of multiple disparate clients
so i was not seeing this path at all. thanks!
If emptying the trash in MM is actually a solution, it implies that there's something wrong with either your IMAP server or the other client. The fact that you refer to wanderlust having "it's equivalent of inbox" makes me suspect that it does not expect another IMAP client to be active and doing what MM does and/or that it simply isn't resynchronizing frequently enough to notice vanishing messages.
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