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by TYPE_FASTER
4054 days ago
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If your e-mail program sends a HTTP request for an image based on an "img" tag in a HTML-formatted e-mail, it can get tracked based on the URL. Many e-mail clients will not show images from e-mail addresses that are not in your contacts list for this reason (for example, Thunderbird). They make the user click a button to make the decision to proceed with the image download an explicit action. |
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