Bug 291745

Summary:	filters not applied on read emails
Product:	[Frameworks and Libraries] Akonadi	Reporter:	tim blechmann <tim>
Component:	Mail Filter Agent	Assignee:	kdepim bugs <kdepim-bugs>
Status:	RESOLVED INTENTIONAL
Severity:	normal	CC:	amantia, redm
Priority:	NOR
Version:	4.8
Target Milestone:	---
Platform:	Ubuntu
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description tim blechmann 2012-01-17 08:50:52 UTC

Version:           4.8 (using Devel) 
OS:                Linux

i'm running kmail on 2 machines, my laptop and my workstation. the filter rules are similar, but they do not match, especially the workstation has more filter rules than the laptop.

however if i read emails in INBOX on my laptop, but the filter rules on the workstation should move them to a different directory, the filter is not applied (possibly because it does not filter read emails?). i have to select the specific mails and apply the filter manually.

seems to be an issue on both 4.7 and 4.8

Reproducible: Always

Steps to Reproduce:
use the same imap account on at least two machines with different filter rules.

Actual Results:  
filters are not applied

Expected Results:  
filters should be applied

Comment 1 András Manţia 2012-02-11 22:54:33 UTC

I can confirm this with IMAP Inbox. If the mail is read with a different client (e.g webmail), on the next sync the filter is not applied to the read mails.

Comment 2 András Manţia 2012-10-13 22:38:10 UTC

Actually after looking at the code and thinking more, this is intentional. 
To explain it: filters are applied that appear in special folders (Inbox). If we would filter also newly added read mail, it would be impossible to move back a mail that was filtered to inbox (for whatever reasons, including bad filtering). 
For similar reasons mails marked as ignored or spam are also excluded from filters.

Comment 3 tim blechmann 2012-10-14 09:23:54 UTC

well, i've stopped using kmail for other reasons, but i fail to see the reason why this is not possible. if a mail was moved to inbox by a filter, the filter could simply ignore that mail. pseudocode:

newlyAddedMails = collectNewlyAddedMails();
foreach (mail in newlyAddedMails):
  applyFilter(mail)

if applyFilter moves the mail to inbox, it won't be filtered, again.

Comment 4 Michael Reiher 2012-12-16 16:01:27 UTC

Please reconsider setting this as Won't Fix. For instance I read regularly mail through a webmail frontend at work or through the mail client of my phone, none of these have filters setup but mark mails as read. Which is IMHO a perfectly usual use case. And at home I always have to filter them again manually. This is pretty annoying behavior. 

And actually I don't understand the problem. Simply filter all mails newly synced to Inbox, and ignore manually moved mails (set a flag or whatever). Maybe this is not trivial with the current implementation (no idea) and takes a bit longer to fix, but this doesn't mean the behavior is correct.