WhatConverts is able to easily track form submissions through any web form. This allows you to manage leads, quotes, sales and contact submissions in one central place. WhatConverts also track phone calls and e-commerce transactions.
Troubleshooting Contact Form 7 plugin for WhatConverts Tracking.
We have found that the Contact Form 7 plugin hides the “Form Name”, “ID” and “Class” of a form on a published web page. We need one of these unique identifiers to track form submissions.
You can add any id and class to a Contact-form-7 form by adding the html_id and html_class attributes into a [contact-form-7] shortcode.
[contact-form-7 id="1234" title="Contact form 1" html_id="contact-form-1234" html_class="form contact-form"]
Source: FAQ from Contactform7.com