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Some mail programs (usually webmail) put some pretty useless information after the timezone information.
For example, today I received an e-mail from a friend with the following date header:
Tue, 26 Jan 2010 12:37:09 +0100 (Paris, Madrid)
Would it be possible to strip this useless information, so the header looks like this:
Tue, 26 Jan 2010 12:37:09 +0100
Sorry to make additional requests, but this is such a good add-on that it's difficult to resist the temptation to make it perfect!

Questa recensione riguarda una versione precedente (0.5.1) del componente aggiuntivo. 

It is possible, but I hope that %date% is converted with original message's date string.
I'm sorry.

Best Regard.