Radek Mezulanik

Write your quotes in the content and let users to share them on Twitter. 
It’s just a shortcode you can use in your content with all the optional fields:
[zednatq tweet=”This is my quote.” username=”myname” utm_campaign=”othercampaign” utm_medium=”othermedium” utm_source=”othersource”]
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Zedna Twitter Quotes

Share your quotes in the content and let user to share them on Twitter.

strategieko

A simple plugin to give you the power to track source, medium, campaign and keyword on your CF7 forms
This plugin saves any UTM values coming in URL with cookies and let the users browse the website normally.
You dont have to worry about passing the values when users are switching from page to page. All the values are stored and automatically retrieved when a user submits any contact form 7.
The following parameters are recognized:
Source -> utm_source 
Campaign -> utm_campaign or campaign 
Keyword -> utm_term or keyword 
Medium -> utm_medium
Additional setup is required for every form in which you wish to do source tracking. See installation below.
<h3>How to use UTM fields</h3>
https://ga-dev-tools.appspot.com/campaign-url-builder/

Source Tracking for Contact Form 7

Easily track how your visitors that submitted a form got to your site (including source, campaign, medium and keyword tracking).

Zedna Twitter Quotes vs Source Tracking for Contact Form 7