How to track a mail

When you send out a lot of mails its nice to know if they are opened or not. One way to do this is by using image tracking.

Say you put in a somewhat useless image into the mail

<img src="http://mydomain/open_register.png?user=1234">

On the mydomain server you would have to have a redirect in .htaccess like this:

RewriteEngine On
RewriteRule open_register.png open_mail_register.php [QSA,L]

The QSA (query string append) directive is important. It ask the apache server to append the query of the link to the php-file we open. This results in the total query:


In the file open_mail_register.php we could save the information that 1234 have opened the mail and then generate some rather useless graphics like this:

$user = $_GET['user'];

$im = imagecreatetruecolor(4, 4);
$c = imagecolorallocatealpha($im, 255, 255, 255, 127);
imagefill($im, 0, 0, $c);
header('Content-Type: image/png');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Expires: 0');

Now we are certain that the mail  was opened by 1234!

When you open mails from computerworld for instance this technique is applied, without the overhead of masking the .php as a .png. So its in use out there:

<img src=3D"
c1bb774cc86048faa25ef2d2265fb712" height=3D"1" width=3D"1">


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How to install the latest JAVA without the ASK toolbar

I really need to share this!

For a long time now, I have been angry with Oracle because of the ASK toolbar add beeing added to your computer when installing JAVA. I know that you can just disable the toolbar when installing, but I see a lot of friends when installing JAVA, they doen’t know hos to disable the ASK toolbar so they just get it installed.

I can’t understand why it has to be selected, and you need to deselect instead of the other way around.

BUT – now I have found that if you manually download the install files, the addware is not in the installfiles.
all java donwloads

I hope this can help others keep out the ASK toolbar addware.

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How to remove “Powered by Text-Enhance” adds

At many blogs and spam detection pages on the internet, people are complaining about getting infected with a program that highlights chosen words on a webpage, and when hovering them with the cursor an add is appearing saying “Powered by Text-Enhance“.

The major problem here is that none of the spam killers or antivirus programs, not even known ones like Norton, Bullguard and … detect it as what it is – annoying spam that needs to get removed right away.

I personally got infected by installing an extension to Google Chrome webbrowser. Well I admit, I didn’t take my usual precaution and looked into the program before installing it. Never the less it was annoying, and not easy to get rid of, well that was until I understood from where I got the nuisance.

I could not find my actual problem on the internet, why I wrote this. I did though get some hints.

One good hint I got was to disable all the installed extension to Chrome, and then enable them one at a time, until the headache revealed itself.

I found in my case, that it came with an extension called “dislike it!”, a facebook dislike button. Well it sounded nice, and actually seemed like working – bit I was infected with this unwanted add blower.

So, all I had to do – fortunately, was to delete the Chrome extension and it is gone.

Hopefully I helped you save a lot of time, that I didn’t save.

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