Charles Marcus a écrit :
> On 3/9/2009 6:12 PM, mouss wrote:
>>> I only said it was an interesting idea, and wondered if it could be
>>> automated... I'm still not sure it *should* be done... :)
> 
>> it can be automated. the hard part is to define the criteria (when to
>> keep, when to "release") and how to recall (how does user tell the
>> system that he wants to recall a message,
> 
> Well, release after expiry time is easy - as for how the user recalls,
> one way would be to define a special email address (ie,
> <rec...@example.com> where example.com is your domain, and tell the user
> to simply go to their 'Sent' folder, click the 'Reply button for the
> message they want to recall, and change the destination address to
> <rec...@example.com>. The magic, of course, would be the script that
> processes these requests...
> 

it's not that hard. the hard part is to make sure that how recalls only
recalls his own mail. This is easy via a web interface which requires
user authentication (aka webmail). if everything is done by mail, then
it's a bit harder unless you force authentication (sasl).

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