Gravity Forms - Send Personalized Notification Emails

// Send personalized emails from list field

add_action( 'gform_after_submission_1', 'send_list_field_notifications', 10, 2 );
function send_list_field_notifications( $entry, $form ) {
    $field_id = 19; // the id of the list field

    // get the $field object for the provided id
    $field = RGFormsModel::get_field( $form, $field_id );

    // check the field type as we only want the rest of the function to run if the field type is list
    if ( $field->get_input_type() != 'list' ) {
        return;
    }

    $list_values = rgar( $entry, $field_id );

    if ( empty( $list_values ) ) {
        return;
    }

    // setup the basic notification properties
    $notification = array(
        'id'       => 'list_field_notification',
        'name'     => 'list_field_notification',
        'fromName' => '{Your Name (First):16.3} {Your Name (Last):16.6}',
        'from'     => '{Your Email Address:7}',
        'subject'  => 'Our Team ({Team Name:1}) Has Been Registered in The Reach Open Golf Tournament',
    );

    $message = 'Hey {firstname},<br><br>I just registered our team ({Team Name:1}) in the 2016 Reach Open Golf Tournament. Be sure to register as a member of our team by visiting the website at: http://thereachopen.org/register-with-a-team/. [gravityforms action="conditional" merge_tag="{Do You Wish To Pay For Your Entire Team Or Will Each Member Pay Individually:4}" condition="is" value="Pay For Entire Team"][gravityform action="conditional" merge_tag="{Buy Team Tee Buster & Mulligans:13.1}" condition="is" value="I would like to pay for my team\'s Tee Buster and Mulligans"]
I have already paid our team registration costs of $500 as well as purchased a Tee Buster and Mulligan package for each of us, so you will only have to register as a member of our team.
[/gravityform][/gravityforms][gravityforms action="conditional" merge_tag="{Do You Wish To Pay For Your Entire Team Or Will Each Member Pay Individually:4}" condition="is" value="Pay For Entire Team"][gravityform action="conditional" merge_tag="{Buy Team Tee Buster & Mulligans:13.1}" condition="isnot" value="I would like to pay for my team\'s Tee Buster and Mulligans"]
I have already paid our team registration costs of $500. If you would like to purchas a Tee Buster and Mulligan package you can choose that from the registration form. So go ahead and register as a member of our team.
[/gravityform][/gravityforms][gravityforms action="conditional" merge_tag="{Do You Wish To Pay For Your Entire Team Or Will Each Member Pay Individually:4}" condition="is" value="Pay For Entire Team"]When you register, you will need to pay your registration fee of $125. You may also purchase a Tee Buster and Mulligan package at that time.
[/gravityforms]<br>
<br>
While you are registering, if you want to attend the dinner that evening, you can make your reservations and pay for that.<br>
<br>
You will be taken to PayPal to pay any additional fees after you click the submit button if you select "Pay Online". If you choose to mail in a check, you will be shown the mailing address to send the check to.<br>
<br>
[gravityforms action="conditional" merge_tag="{My Personal Note:17}" condition="isnot" value=""]
P.S. {My Personal Note:17}
[/gravityforms]';

    $first_name_col_key = rgars( $field->choices, "0/text" ); // first column
    $email_col_key      = rgars( $field->choices, "2/text" ); // third column

    $list_values = unserialize( $list_values );

    foreach ( $list_values as $value ) {
        // get the emails for each row
        $email = rgar( $value, $email_col_key );
        if ( GFCommon::is_valid_email( $email ) ) {
            $notification['to'] = $email;
            $notification['message'] = str_replace( '{firstname}', rgar( $value, $first_name_col_key ), $message );
            GFCommon::send_notification( $notification, $form, $entry );
        }
    }

}