src/XQueue/Maileon/API/Mailings/MailingsService.php
function setReplyToAddress($mailingId, $auto = true, $customEmail = null)
    {
        $queryParameters = array(
            'auto' => ($auto == TRUE) ? "true" : "false",
            'customEmail' => $customEmail
        );

        return $this->post('mailings/' . $mailingId . '/settings/replyto', null, $queryParameters);
    }
function setReplyToAddress($mailingId, $auto = true, $customEmail = null)
    {
        $queryParameters = array(
            'auto' => ($auto == TRUE) ? "true" : "false",
            'customEmail' => $customEmail
        );

        return $this->post('mailings/' . $mailingId . '/settings/replyto', null, $queryParameters);
    }
Sets the reply-to address of the mailing identified by the given ID.

@param string $mailingId
the ID of the mailing
@param bool $auto (default = true)
If true, the Maileon autorecognition will be used and emails will be saved within Maileon. If false, a custom email address can be passed which gets all mails forwarded.
@param string $customEmail (default = empty)
If $auto is false, this email will be used for manual responses.
@return
@throws MaileonException