apply_filters( 'new_network_admin_email_content', string $email_text, array $new_admin_email )

2772	 *     Data relating to the new network admin email address.2773	 *2774	 *     @type string $hash     The secure hash used in the confirmation link URL.2775	 *     @type string $newemail The proposed new network admin email address.2776	 * }2777	 */2778	$content = apply_filters( 'new_network_admin_email_content', $email_text, $new_admin_email );2779 2780	$current_user = wp_get_current_user();2781	$content      = str_replace( '###USERNAME###', $current_user->user_login, $content );2782	$content      = str_replace( '###ADMIN_URL###', esc_url( network_admin_url( 'settings.php?network_admin_hash=' . $hash ) ), $content );2783	$content      = str_replace( '###EMAIL###', $value, $content );2784	$content      = str_replace( '###SITENAME###', wp_specialchars_decode( get_site_option( 'site_name' ), ENT_QUOTES ), $content );