nicholas_tsim

Add useful referrer information to emails sent via any Contact Form 7 contact forms on your WordPress website. Based on the Enhanced WordPress Contact Form plugin by Yoast.
Main features are: 
* Add website referrer(s) links. 
* Pages visited on your website. 
* Search engine keywords used (if referrer was a search engine).
<h3>Notes</h3>
Can be modified to only replace [referrer] tags by uncommenting line 148 and commenting line 150. May be useful if you want to restrict which contact forms send referrer information and which don’t.

Contact Form 7 Referrer Addon Plugin

Add useful referrer information to emails sent via any Contact Form 7 contact forms on your Wordpress website. Based on the Enhanced Wordpress Contact …

wplabs

Hide Referer for WordPress removes the referer (referrer) from all external links on your blog. It does this by converting all outgoing 
links on your blog using the href.li service and effectively hides your site as origin of the referred link.
For example, Hide Referer for WordPress will convert an external link to wordpress.org, to <a href="https://href.li/?http://wordpress.org" rel="nofollow ugc">https://href.li/?http://wordpress.org</a>.

Advanced WP Hide Referer

Hide Referer for WordPress removes the referer (referrer) from all external links on your blog. It does this by converting all outgoing

Contact Form 7 Referrer Addon Plugin vs Advanced WP Hide Referer