Recep UNCU

An Extension for WordPress that allows you to Link Tracking.
<ol>
<li>Just install the plugin and the Digit Link Tracking admin section will be created in WordPress’ settings page.</li>
<li>Enter the names of the URL parameters you want to be tracked</li>
<li>That’s it. The URL parameters you add will be included in all links.</li>
</ol>

Rakam Link Tracking

An Extension for WordPress that allows you to Link Tracking.

ludwigmedia

When passing UTM parameters, GCLID, and other parameters to your website it stores this info via a browser cookie for 30 days. 
It can then be inserted into any lead generation form on your website. It automatically adds this extra information as hidden fields on your HTML form.
<h3>Why Install?</h3>
<ul>
<li>Track the source of email submissions</li>
<li>Track ROI of your Google, Bing, and Facebook ad campaigns.</li>
<li>Know which source of traffic is more profitable.</li>
</ul>
<h3>Works With</h3>
It automatically works with most HTML form submissions such as: 
* Contact Form 7 
* WP Form 
* AWeber 
* Mailchimp 
* Salesforce CRM 
* Ninja Forms 
* ActiveCampaign 
* Caldera Forms 
* WooCommerce 
* Infusionsoft 
* etc.
No code changes is needed with your website. Just install this plugin and go. You do need to add support of passing these fields to the service used.
<a href="https://larryludwig.com/plugins/utm-tracker/?utm_source=plugin&utm_medium=organic&utm_campaign=page" rel="nofollow ugc">Read Full Documentation</a>

UTM Tracker

When passing UTM parameters, GCLID, and other parameters to your website it stores this info via a browser cookie for 30 days.

Rakam Link Tracking vs UTM Tracker