I am trying out serving DFP ads in email. I\'m following the guidelines here.
Using the co= option doesn't work for DFP Small Business. My workaround is:
Use the same code for img
And build a redirect link on your website . This page reads and filters the response from http://pubads.g.doubleclick.net/gampad/adx?iu=/{my_pub_id}/300x250_email&sz=300x250&c={cachebuster} in order to get the click-tracking link using javascript link=$(xmlDoc).find('a').attr('href'); and redirect.
This workaround doesn't work for rotation (more than one creative/line item is competing for the same ad unit at the same time).
I'd like to know how to serve email ads in rotation using DFP SB