- Copy the Tracking tracking code from the email
- On Blogger, go to the Design > Page Elements tab and click one of the "Add a Gadget" links in the Footer (the block at the bottom)
- Paste the Tracking tracking code into the text area, name it something like "Opentracker widget"
- Save (window will close)
- If you have multiple gadgets in your footer, You'll want it to be the last gadget on the page.