[MlMt] include contents of one smart mailbox in another

[Shoshanna Green]

Setting B as a source mailbox for A would mean that A's conditions would 
be applied to messages in B and the messages that meet them would be 
included in A, but messages in B that do not meet them wouldn't be. What 
I want is to define A with a nonexclusive OR: A's conditions need to be 
along the lines of

ANY OF:
  - is contained in B
  - [set of other conditions]

Is that clearer?

On 10 Nov 2020, at 14:51, Robert Brenstein wrote:

> What stops you from setting mailbox B as the source for mailbox A?
> If you do that, then the conditions you set for A apply only to mails 
> that are shown in B.
> You can have multiple source mailboxes for smart mailboxes, those 
> being either true mailboxes, combo mailboxes or smart mailboxes.
>
> On 10 Nov 2020, at 18:02, Shoshanna Green wrote:
>
>> Is it possible to set up a condition for smart mailbox A that will 
>> catch all messages that are in smart mailbox B, without just copying 
>> all the conditions for B over to A? Copying them over requires 
>> manually keeping the two sets of conditions identical; if I make a 
>> change to B I have to remember to make the same change to A.
>>
>> In other words, I'd like to be able to have a condition on A that 
>> says "is included in B" along with the usual conditions like "is from 
>> such-and-such address," "is unread," etc.
>>
>> (I believe that if B is a submailbox of A I can just check the box on 
>> A's Mailboxes tab that says "Include messages in any submailboxes of 
>> this mailbox"? But I'm wondering if there's a way to do it when B is 
>> not a submailbox of A.) (Also I find that checkbox a bit 
>> counterintuitive, since the mailboxes listed on that tab are the ones 
>> to which the conditions will be applied; listing them there doesn't 
>> mean that the messages in them will automatically be included whether 
>> or not the conditions match. But that seems to be what the checkbox 
>> means for submailboxes. The checkbox would be more intuitive to me on 
>> the Conditions tab.)
>>
>> Thanks for any help!
>>
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Shoshanna Green
shoshannag at gmail.com