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I have a user, Jane, who comes to my landing page through an AdWords campaign.  She click off my landing page, browses the website, then submits a contact form on one of the other pages on the site. My problem is when I receive the email from the contact form, there is no identification that this user came through adwords.  If she had submitted the contact form on my landing page this wouldn't be a problem, but she submitted the form from elsewhere on the site. I know that I can see a NUMBER of how many goal conversions were achieved this way in Analytics. This is not what I want.   I need something to identify it on the CONTACT FORM so that the intake staff in my office can credit that lead to the correct campaign. Any idea on how to achieve this.  Technically, I am using the latest version of Wordpress and the Contact Form 7 plug-in.  I can change plug-ins if needed.