WordPress at a glance
filter is not described

wpmu_welcome_notification filter-hook . WP 3.0.0

Filters whether to bypass the welcome email after site activation.

Returning false disables the welcome email.


add_filter( 'wpmu_welcome_notification', 'filter_function_name_7635', 10, 5 );
function filter_function_name_7635( $blog_id, $user_id, $password, $title, $meta ){
	// filter...

	return $blog_id;
Blog ID.
User ID.
User password.
Site title.
Signup meta data. By default, contains the requested privacy setting and lang_id.


Since 3.0.0 Introduced.

Where the hook is called

wp-includes/ms-functions.php 1549
if ( ! apply_filters( 'wpmu_welcome_notification', $blog_id, $user_id, $password, $title, $meta ) ) {

Where the hook is used (in WP core)

Usage not found!