webtechideas

WTI Contact Back is a plugin for sending website admin an email letting him know that he needs to contact you back. Its simple by having only name and email fields to fill up. It comes with a language file for en-US(english- United States).
Some of the useful features: 
* AJAX based contact processing. 
* No need to fill up long form. Just fill up name, email and submit.
Plugin URL: http://www.webtechideas.com/wti-contact-back-plugin/

WTI Contact Back

A smooth ajax-based contact form for informing web admin to contact back.

Youdemus

Contact Form 7 to Mailjet is a plugin developed by Youdemus.
This plugin allows you to automatically fill in a contact list on Mailjet, or database, each time a user submits a contact form on your WordPress website with Contact Form 7.
The huge benefit of this plugin is that it allows you to create a specific email’s database on Mailjet to distinguish contacts from your site. You can also specify a specific list for each of your forms.
This plugin requires that the official Mailjet plugin is properly configured (API). This is not an official Contact Form 7 plugin or Mailjet plugin.
It is also possible to associate a check box for the GPRD if you have one in your contact form.
For help in installation, please check FAQ or contact us directly.
<a href="https://www.youdemus.fr/contactez-nous/" rel="nofollow ugc">Support</a>

Contact Form 7 to Mailjet

Just remember that the first field must be the email shortcode from CF7. By default, it's "your-email". 

Save my life :-)

Link Contact Form 7 with Mailjet contact list

WTI Contact Back vs Contact Form 7 to Mailjet