full-disclosure - CSS in E-Mails possible E-Mail-Validity Check for Spammers?

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From: prb at lava.net (Peter Besenbruch)
Subject: CSS in E-Mails possible E-Mail-Validity Check
 for Spammers?

plonk@...enritter.de wrote:
> ...How dangerous is this? What about possible CSS-exploits?
> 
> 
> Workaround suggestions ;-)
> 
> - Cut your internet connection before reading any suspicious e-mails,
> you can probably live without the CSS.
> - turn off HTML in E-Mails (not possible in Mozilla?)

How about View, Message body As, Plain Text?
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