WordPress at a glance
function is not described

new_user_email_admin_notice() WP 3.0.0

Adds an admin notice alerting the user to check for confirmation request email after email address change.

  • Global. String. $pagenow
  • Since 4.9.0 This function was moved from wp-admin/includes/ms.php so it's no longer Multisite specific.

No Hooks.

Return

Nothing (null).

Usage

new_user_email_admin_notice();

Code of new user email admin notice: wp-includes/user.php VER 5.1.1

<?php
function new_user_email_admin_notice() {
	global $pagenow;

	if ( 'profile.php' === $pagenow && isset( $_GET['updated'] ) ) {
		$email = get_user_meta( get_current_user_id(), '_new_email', true );
		if ( $email ) {
			/* translators: %s: New email address */
			echo '<div class="notice notice-info"><p>' . sprintf( __( 'Your email address has not been updated yet. Please check your inbox at %s for a confirmation email.' ), '<code>' . esc_html( $email['newemail'] ) . '</code>' ) . '</p></div>';
		}
	}
}