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From Sylvain Wallez <>
Subject Re: Mail thread headers (was Re: source resolving in 2.2)
Date Fri, 30 Jan 2004 18:11:52 GMT
Geoff Howard wrote:

> Sylvain Wallez wrote:
>> Geoff Howard wrote:
>>> Sylvain Wallez wrote:
>>>> Unico Hommes wrote:
>> <snip/>
>>>>>> BTW, Unico, I don't know what is your mail software, but it 
>>>>>> doesn't send the "In-Reply-To" header, which breaks thread views

>>>>>> in Mozilla and makes following discussions highly difficult.  
>>>>> I use Outlook. I checked the thread view in Thunderbird but it 
>>>>> wasn't a
>>>>> problem there. What client are you using? I may rise to the 
>>>>> opportunity
>>>>> to finally exorcise The Evil Empire from controlling my inbox ;-)
>>>> Read carefully: "...which breaks thread views in _Mozilla_..." ;-)
>>>> Are other people experiencing this also?
>>> Yes, but I was very interested to hear they may have this solved in 
>>> Thunderbird.  I recently happened to look into what headers were 
>>> being sent by mozilla and outlook and did think it looked like 
>>> something a reader could solve...
>> Actually, Unico is not the only one. What I've found is that Mozilla 
>> uses the In-Reply-To header whereas Outlook (at least some version) 
>> uses "Thread-Topic" and "Thread-Index".
>> Outlook's headers seem strange to me, as I don't know how a mailer 
>> can rebuild a thread tree with just an indentifier for the thread, 
>> but no information about the posts relationships.
> Ah, yes - that was it.  And I remember now it wasn't clear whether 
> they gave enough info to reconstruct the tree, or just associate 
> messages together in a common conversation topic.  I use the 
> conversation topic view in outlook at work, and it's not a tree - just 
> a flat topic view. May not be possible after all.  My mozilla keeps 
> outlook posts in the same thread, but under the root post, not the 
> actual message replied to.  Maybe Thunderbird and Mozilla are the same 
> after all?

Well, I guess some Micro$oft marketing guy decided once that tree view 
were too much complicated for average users and invented this 
"conversation view" where all messages in a thread are sorted 

And even worse: "In-Reply-To" is specified in RFC 2822 [1] as a header a 
mailer /should/ send (see ยง3.6.4). Sure, it's not written /must/ send, 
but we can expect from a full-featured mailer to properly implement 
these optional features, and not inventing its own.

And that f**cking M$ doesn't even use the "X-" prefix for its 
non-standard headers. I also found a page [2] listing all other "fancy" 
M$-specific fields.



Sylvain Wallez                                  Anyware Technologies 
{ XML, Java, Cocoon, OpenSource }*{ Training, Consulting, Projects }
Orixo, the opensource XML business alliance  -

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