adding pixel tracker in Gmail?

Question

i am looking for an open source (preferred solution) or commercial way to include a pixel tracker in my gmail emails. nothing particularly complicated, I just want to know if you opened my last email or not ;-)

Many thanks!

Answer 1

In the mail:

< img src="http://mydomain.com/mypixel.gif" alt="">

On the servers command line

grep mypixel.gif path/to/access.log

Provided you use an apache server and the logfile is called access.log (should be the default). Look at the grep manpage for options and exact syntax, but it doesn't get much less complicated or more open source than that (it might be that your tracking efforts are thwarted by the Gmail image proxy, though).