[Users] Filter->Condition: test for missing Date header?

[Pierre Fortin]

On Mon, 24 Mar 2025 17:01:59 -0400 Pierre Fortin via Users wrote:

>On Mon, 24 Mar 2025 17:39:04 +0100 wwp wrote:
>
>>Hello Pierre,
>>
>>
>>On Mon, 24 Mar 2025 12:18:57 -0400 Pierre Fortin via Users <users at lists.claws-mail.org> wrote:
>>  
>>> On Mon, 24 Mar 2025 12:16:14 -0400 Pierre Fortin via Users wrote:
>>>     
>>> >On Mon, 24 Mar 2025 15:38:51 +0100 wwp wrote:
>>> >      
>>> >>Hello Pierre,
>>> >>
>>> >>
>>> >>On Mon, 24 Mar 2025 08:39:24 -0400 Pierre Fortin via Users <users at lists.claws-mail.org> wrote:
>>> >>        
>>> >>> Hi,
>>> >>> 
>>> >>> Does anyone have a Filter Condition to test for a missing Date header?
>>> >>> 
>>> >>> Asian spammers have tendency to send messages without a Date header which
>>> >>> makes these messages appear as the oldest date and requiring scrolling to
>>> >>> the other end of the message list to access/delete them.
>>> >>> 
>>> >>> Just wanting to trash any messages not containing a Date header.          
>>> >>
>>> >>~header "Date" regexpcase "."
>>> >>
>>> >>maybe? That would not cover non-valid (but still existing) date values.        
>>> >
>>> >Thanks, missed trying that variant.  Can't test right now...  I clicked
>>> >Trash on a couple of these messages; but now can't find them in the Trash
>>> >folder.
>>> >
>>> >POP3S, no filter affects these messages, so they stay in the Inbox on
>>> >receipt. However, I expected to find them in the Trash folder intending
>>> >to use them to test; but nope...
>>> >
>>> >Two possible reasons:
>>> >- No-date message is totally deleted on Trash click
>>> >- No-date message has a Date header added upon Trashing
>>> >Other?      
>>> 
>>> Doh!  This must've been deleted completely due to no-date being older
>>> than my 30 retention period.
>>>     
>>> >The next time I get one of these messages, my current rule will only
>>> >change its color as a test.    
>>
>>Once filtered and in, such message with missing or broken Date: header
>>can be 'fixed' by calling one of our tools available online (that you
>>can invoke through an action). Check the fix_date.sh one at
>>https://www.claws-mail.org/tools.php.  
>
>Appreciate that info; but for over a year, all the missing date messages
>were chinese, japanese, other spam, so I was looking for a filter
>condition that would trigger any action; in this case, delete which will
>be immediate regardless of the 30 day retention (see "Doh!" above).  :)

Didn't have to wait long for one of these messages.
However, this rule didn't trigger; so I opened the Filter Log, cleared
it, and manually filtered which gave:
[2025-03-24 19:08:36] filtering message (manually)
                       message file: /home/pfortin/Mail.pfortin/inbox/72296
                       Date: (null)
                       From: 楽天証券からのお知らせ  <supportcontact at glaq.com>
                       To: pfortin at pfortin.com
                       Subject: 【楽天証券】株式取引手数料最大50%OFF！期間限定スペシャルオファー
[2025-03-24 19:08:36] processing rule 'No Date' [ ~header "Date" regexpcase "." color 2 ]
> rule is not account-based
[2025-03-24 19:08:36] checking if message matches [ ~header "Date" regexpcase "." ]
> message does not match

Also tried: header "Date" regexpcase "."  (contains)

So it appears there's no way to check for a missing header...

I suspect the "juice ain't worth the squeeze" to add Header "is missing" as a 3rd choice to "contains"/"doesn't contain".

Thanks for trying,
Pierre

>>Regards,
>>  
>