CF7有一个有用的挂钩wpcf7_submit 可用于处理发送的数据：

add_action("wpcf7_submit", "SE_379325_forward_cf7", 10, 2);

function SE_379325_forward_cf7($form, $result) {
  if( !class_exists(\'WPCF7_Submission\') )
    return;
  $submission = WPCF7_Submission::get_instance();
  if ($result["status"] == "mail_sent") { // proceed only if email has been sent 
    $posted_data = $submission->get_posted_data();
    save_posted_data($posted_data);
  }
};

// your insert function:
function save_posted_data($posted_data){
  //var_dump($posted_data); // $posted_data is an array containing all the form fields and values 
  $form_id = $posted_data["_wpcf7"]; // this is the post->ID of the submitted form so if you have more than one you can decide whether or not to save this form fields
  if($form_id !=2) // for exampe you may want to use only data coming from form # id 2
    return;
  global $wpdb;

  $wpdb->insert( 
     $wpdb->prefix.\'{YOUR_TABLE}\',
     array(
       \'{column1}\'=>$posted_data[\'your-name\'],
       \'{column2}\'=>$posted_data[\'your-surname\']
     ),
     array(\'%s\',\'%s\')
   );
} 

如果您想在发送电子邮件之前处理数据，这里还有一个钩子：

function action_wpcf7_before_send_mail( $contact_form ) { 
  // var_dump($contact_form);
};

add_action( \'wpcf7_before_send_mail\', \'action_wpcf7_before_send_mail\', 10, 1 ); 

还应考虑与提交验证相关的问题，这些问题也涉及此过程。

下面是List of available CF7 hooks»

了解GDPR隐私合规方面的影响。