[MlMt] expiring deleted and sent

[Benny Kjær Nielsen]

On 10 Oct 2018, at 0:46, Randall Gellens wrote:

> On 8 Oct 2018, at 10:52, Randy Bush wrote:
>
>> clearly i do not understand how a smart mailbox is different than a
>> stupid one
>
> Think of a smart mailbox as a continually executed search.  You can 
> perform actions on messages that meet the search criteria.

Yes, a smart mailbox is just a saved search. Technically, everything in 
MailMate is a search including the IMAP mailboxes (but that's an 
implementation detail).

Some other comments for this thread:

* Smart mailboxes are always up-to-date. The only exception is if, e.g., 
marking something as read in a mailbox of unread messages. Updating is 
then delayed until the mailbox is deselected (MailMate has go through 
hoops to make this happen because up-to-date is its modus operandi).

* Smart mailboxes involving date-based conditions are updated exactly 
when the date condition is met. MailMate sets up a timer after figuring 
out which message is the next one to be added to or removed from the 
mailbox.

* There's no way to make deletion happen 30 days after a message has 
been added to a mailbox. The closest is to base it on the virtual 
“Date-Last-Viewed” header, but this won't work well for messages 
never viewed or messages viewed on a different machine.

It might make sense to introduce a virtual date header which remembers 
when a message was first seen by MailMate in its current IMAP mailbox. 
I'll give that some thought.

-- 
Benny
https://freron.com/become_a_mailmate_patron/
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