Looks like it's similar to the 1px transparent image technique spammers use. Gmail seems to be blocking an image in the email. I wonder if this works with plain text emails.
Fabrizio p.s. i read this list on the weekends. On 9/29/07, Juha-Matti Laurio <[EMAIL PROTECTED]> wrote: > > Your headers etc. doesn't state that this service is in use. > > If your test will work, it is interesting to know how many read this list > during the weekends too. > Maybe you can let us know. > > BTW: > http://www.didtheyreadit.com/index.php/html/howitworks#tagging > > - Juha-Matti > > Thierry Zoller <[EMAIL PROTECTED]> wrote: > > > > Hi All, > > > > Just a sample test of how many of you read this email. Let's see how > > good it performs for mailinglists and what comes out. > > > > More info - DidTheyReadIt.com > > > > > > -- > > http://secdev.zoller.lu > > Thierry Zoller > > Fingerprint : 4813 c403 58f1 1200 7189 a000 7cf1 1200 9f89 a000 > > > > _______________________________________________ > Full-Disclosure - We believe in it. > Charter: http://lists.grok.org.uk/full-disclosure-charter.html > Hosted and sponsored by Secunia - http://secunia.com/ >
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