By creating special URLs that include tags, you can tie any link click, no matter where the source, to a Google Analytics campaign.
As an example., Google analytics does not automatically track traffic sources from emails like it does with website traffic so you need to do a little extra work to track email clicks specifically.
First you need to use google's URL builder tool: http://support.google.com/analytics/bin/answer.py?hl=en&answer=1033867
Fill out the required fields(see Google URL Builder image below for reference):
- Website URL: Use your issue link in this field BUT make sure you append a page number ("/0" for cover, "/3" for 4th page etc)
- eg http://www.epageflip.net/issue/#####/0 (where ##### is your issue number)
Google URL Builder image
Once users start clicking on the link in your email campaign, and the data begins to propagate (could take up to 24 hours), you can access the link performance through Google analytics in the Traffic Sources>Campaigns section (see Image below).