You can use wpdm_onstart_download action to do something just before start download. Example You can use the following code to send email notification before someone downloads a package <?php function download_notification( $package ) { $package_data = get_post( $package[‘ID’] ); $headers = ‘From: Site Name <noreply@sitename.com>’ . “\r\n”; $headers .= ‘Content-type: text/html’ . “\r\n”; $message = … Continue reading wpdm_onstart_download