Highend theme preventing Contact Form 7 from sending mail correctly

After working with the hosting provider WPEngine developers and the “Postman” WordPress plugin developer trying to diagnose an issue with mail not working for Contact Form 7 and the webhost WPEngine, I have found that the theme “Highend” is causing Contact Form 7 to use the mail() function to send mail, and many enterprise-level hosting providers like WPEngine block email sent using mail().

Your Highend theme also interferes with the very popular “Postman” WordPress SMTP plugin, and causes all Contact Form 7 mail to be sent with mail() instead of wp_mail().

Could you please change your theme to use wp_mail(), and not intercept the way Contact Form 7 sends mail?

If anyone uses a 3rd party SMTP plugin to send mail, having Highend installed with keep Contact Form 7 from sending mail using the plugin (and will also keep email from sending if the Website host blocks sending using the PHP mail() function –which many do)

Changing the theme back to the default 2015 WordPress theme fixes the issue, so I can confirm the issue is with the Highend theme.

Please see this thread for more information:
https://wordpress.org/support/topic/contact-form-7-and-other-plugins-not-going-through-postman

Thanks!