Not override function wp_mail in plugin appointzilla

Hi,

Thanks for this awesome plugin.

I have a problem with another one. It not send e-mail with mandrill.

https://appointzilla.com/

The mail test by your plugin is sent.
I can send mail with other plugin but not this one (appointzilla)

I’ve found the function which shoud send the email :

function sendnotification($to, $subject, $body, $recipent_email) {
            $BlogName =  get_bloginfo('name');
            //check email notification ON/OFF
            if(get_option('emailstatus') == 'on') {
                // get notification details
                $NotificationDetails = get_option('emaildetails');
                //wpemail
                if(get_option('emailtype') == 'wpmail') {
                    $admin_email = $NotificationDetails['wpemail'];
                    $headers[] = "From: $BlogName <$admin_email>";
                    //send admin mail
                    if($to == 'admin') {
                        wp_mail( $admin_email, $subject, $body, $headers, $attachments = '' );
                    }
                    //send client mail
                    if($to == 'client') {
                        wp_mail( $recipent_email, $subject, $body, $headers, $attachments = '' );
                    }
                    //send client mail
                    if($to == 'staff') {
                        wp_mail( $recipent_email, $subject, $body, $headers, $attachments = '' );
                    }

                }// end of wp mail

                //php mail
                if(get_option('emailtype') == 'phpmail') {
                    $admin_email = $NotificationDetails['phpemail'];
                    $headers = "From: $BlogName <$admin_email>";
                    //send admin mail
                    if($to == 'admin') {
                        mail($admin_email, $subject, $body, $headers);
                    }
                    //send client mail
                    if($to == 'client') {
                        mail($recipent_email, $subject, $body, $headers);
                    }
                    //send client mail
                    if($to == 'staff') {
                        mail($recipent_email, $subject, $body, $headers);
                    }
                }// end of php mail

                //smtp mail
                if(get_option('emailtype') == 'smtp') {
                    $admin_email    = $NotificationDetails['smtpemail'];
                    $hostname       = $NotificationDetails['hostname'];
                    $portno         = $NotificationDetails['portno'];
                    $smtpemail      = $NotificationDetails['smtpemail'];
                    $password       = $NotificationDetails['password'];
                    $recipent_email = $recipent_email; //'[email protected]';
                    include_once('notification/SendEmail.php');
                    $SendEmail = new SendEmail();
                    //send mail to admin
                    if($to == 'admin') {
                        $body = "<pre>$body</pre>";
                        $SendEmail->notifyadmin($hostname, $portno, $smtpemail, $password, $admin_email, $subject, $body, $BlogName);
                    }
                    //send mail to client
                    if($to == 'client') {
                        $body = "<pre>$body</pre>";
                        $SendEmail->notifyclient($hostname, $portno, $smtpemail, $password, $admin_email, $recipent_email, $subject, $body, $BlogName);
                    }
                    if($to == 'staff') {
                        $body = "<pre>$body</pre>";
                        $SendEmail->notifyclient($hostname, $portno, $smtpemail, $password, $admin_email, $recipent_email, $subject, $body, $BlogName);
                    }
                }// end of smtp mail
            }// end of email enable check
         }// end of send notification

The get_option(emailtype) is wp_mail.

So I think the plugin use “wp_mail” function but the plugin wpmandrill not override it

I also tried to contact the author plugin but no answers https://appointzilla.com/forum/viewtopic.php?f=5&t=287

https://www.ads-software.com/plugins/wpmandrill/