WordPress at a glance
filter is not described

automatic_updates_send_debug_email filter-hook . WP 3.7.0

Filters whether to send a debugging email for each automatic background update.

Usage

add_filter( 'automatic_updates_send_debug_email', 'filter_function_name_9254' );
function filter_function_name_9254( $development_version ){
	// filter...

	return $development_version;
}
$development_version(true/false)
By default, emails are sent if the install is a development version. Return false to avoid the email.

Where the hook is called

WP_Automatic_Updater::run()
wp-admin/includes/class-wp-automatic-updater.php 459
if ( apply_filters( 'automatic_updates_send_debug_email', $development_version ) )

Where the hook is used (in WP core)

Does not used.