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  1. #1
    Plutonium Lounger Leif's Avatar
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    Tracking images in email

    Would I be correct in assuming an image inserted in an email, e.g.
    <code></code>
    is used to detect an email has been opened?
    And if so, is it specifying the recipient, or just logging the mailshot in general?

    I appreciate the follies of reading emails in HTML, but I find the use of such a device for marketing purposes both reprehensible and an invasion of privacy. (This one came from an otherwise 'reputable' electricity provider.)

    If it is, does anyone know of a list of tracking websites? - I would like to think our router could/would block such image requests if preloaded with domain names.

  2. #2
    Plutonium Lounger Leif's Avatar
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    Re: Tracking images in email

    I think I've found part of the answer at wikipedia: web-bug...

  3. #3
    Super Moderator jscher2000's Avatar
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    Re: Tracking images in email

    I suspect the tracking images are on the same host as the rest of the images, such as banners, logos, actual useful photos... would be difficult to block one without the other.

    In some cases you can strip the query (the part starting with the ?) but with a .php file, at least part of that query is necessary to identify the "image" being retrieved.

    If you use Outlook, you could write a little VBA to disable <img> tags that do not use a standard image extension (e.g., .gif, .jpg, .png) in the URL, and strip any query from those that do. You also could include code to zap out any images that have the 1px height and width attributes. But that's an extra step, and some people might not want to alter the actual message body for reasons of maintaining a pristine archive.

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