Salut Francis,
that's what I forgot to mention: I'm running iRedMail (1.4) with SoGo (5.3.0)
on top.
There I didn't notice any Cyrus package, but dovecot is active.
But as I read your proposal for realisation of my thought-of meager wish, it
sounds mighty complex ...
So it looks as if I should reactivate an old Outlook license to get my old
rule-set based task running again.
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mit freundlichen Grüßen
Michael Koch
Am Freitag, Dezember 10, 2021 16:27 CET, schrieb "Francis Lachapelle"
(flachape...@inverse.ca) :
Hi Michael
> On Dec 10, 2021, at 07:30, M. Koch - MiKo-EDV wrote:
>
> The described function of "settings, email, filters" does only touch incoming
> mails.
>
> I'd like to have a possibility to create a filter action for mails that are
> already sorted into a subfolder.
> For instance, I get every night about 60 notification mails from different
> customers' systems about backup, status, etc..
> These mails go by filters into defined subfolders per customer and below that
> even per device - all no problem.
> But every let's say three months I want to clean up and delete all the mails
> in these subfolders older than 3 months, since these typically "ok"
> notifications are of no importance any more.
>
> Now, I must go to the subfolder, sort by sender and date, scroll down 3-400
> lines to the last "date of no-importance", click the next 3-500 mails and
> then delete them (which only moves them into the waste bin, where I have to
> delete them a second time ...) - and as this clicking takes more time than
> the refresh interval, I can start from the top of the list again ... and
> repeat that for about 10 subfolders ...
> This task would already be easier, if there was within the "search within
> this folder" options a seletion entry "older/newer than ".
>
> When still working with Outlook, I had created a rule set, containing the
> definition of such a clean-up rule, and could execute it within any actual
> subfolder ...
> But only for this, it's not worth the license price.
This feature depends on the mailstore implementation. For example, Cyrus IMAPd
uses annotations (/vendor/cmu/cyrus-imapd/expire), which gives control to the
user:
https://www.cyrusimap.org/imap/reference/faqs/o-annotations.html
Dovecot seems to only provide a way to autoexpunge mailboxes globally:
https://doc.dovecot.org/configuration_manual/namespace/#mailbox-settings
Adding support for Cyrus annotation would be relatively easy. For Dovecot, we
would need to use annotations (metadata, RFC 5464), to let the user assign a
messages expiration to a mailbox and then extend sogo-tool to use this
information to remove expired messages .. Basically doing what Cyrus IMAPd is
already doing.
Francis
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