The status tracker (or "web bug") is an invisible image within the HTML portion of an email that lets the sender know when the recipient has opened the email.
2: How to Add Tracker to Email
To add a tracker to your email send, add the following code to the HTML portion of your email invitation:
<img src='http://v2.decipherinc.com/tracker/[source]/survey/path/blank.gif' width='0' height='0'/>
[source] will be the source of the recipient as indicated in the source column that should exist within the invitation list file generated via
You must replace the
survey/path portion of the code above with the actual path to your project (e.g.
The last part,
blank.gif, can be any file name.
Survey names and IDs are limited to 32 characters. Anything beyond that will not be stored.
3: How the Tracker Works
When the recipient accesses the email, a request will be made to the server for the tracker image file. Their
source variable and project name will be sent with the request and this information will be stored and viewable in the field report's Campaigns tab.
It is at the sole discretion of the recipient to display HTML and fetch the tracker image file. An increasing number of email providers, by default, will not display images contained within emails until forced to.
4: Find Out Who Opened the Email
Requires Decipher Cloud
To find out who opened a certain email for any given project, run:
dump-opens selfserve/9d3/proj1234 > emails_opened.txt
emails_opened.txt file will contain the source ID and timestamp for each recipient who opened the email and successfully fetched the tracker image.
dump-opens may take awhile to fetch all opens for a large project. If you only need find out who opened the email since a specific date, run:
dump-opens selfserve/9d3/proj1234 05/01/2014 > emails_opened.txt
The command above will only return those who opened the email since May 1, 2014.