diff --git a/wp-admin/includes/ms.php b/wp-admin/includes/ms.php
index c1f1708e73..937293a34d 100644
--- a/wp-admin/includes/ms.php
+++ b/wp-admin/includes/ms.php
@@ -253,6 +253,7 @@ function update_option_new_admin_email( $old_value, $value ) {
 	);
 	update_option( 'adminhash', $new_admin_email );
 
+	/* translators: Do not translate USERNAME, ADMIN_URL, EMAIL, SITENAME, SITEURL: those are placeholders. */
 	$email_text = __( 'Howdy ###USERNAME###,
 
 You recently requested to have the administration email address on
@@ -334,6 +335,7 @@ function send_confirmation_on_profile_email() {
 				);
 		update_option( $current_user->ID . '_new_email', $new_user_email );
 
+		/* translators: Do not translate USERNAME, ADMIN_URL, EMAIL, SITENAME, SITEURL: those are placeholders. */
 		$email_text = __( 'Howdy ###USERNAME###,
 
 You recently requested to have the email address on your account changed.
diff --git a/wp-admin/includes/schema.php b/wp-admin/includes/schema.php
index c522ab5665..3011a6fb82 100644
--- a/wp-admin/includes/schema.php
+++ b/wp-admin/includes/schema.php
@@ -917,6 +917,7 @@ function populate_network( $network_id = 1, $domain = '', $email = '', $site_nam
 		$site_admins = get_site_option( 'site_admins' );
 	}
 
+	/* translators: Do not translate USERNAME, SITE_NAME, BLOG_URL, PASSWORD: those are placeholders. */
 	$welcome_email = __( 'Howdy USERNAME,
 
 Your new SITE_NAME site has been successfully set up at:
diff --git a/wp-admin/ms-delete-site.php b/wp-admin/ms-delete-site.php
index af8a5e05dc..07d87e2066 100644
--- a/wp-admin/ms-delete-site.php
+++ b/wp-admin/ms-delete-site.php
@@ -42,6 +42,7 @@ if ( isset( $_POST['action'] ) && $_POST['action'] == 'deleteblog' && isset( $_P
 
 	$url_delete = esc_url( admin_url( 'ms-delete-site.php?h=' . $hash ) );
 
+	/* translators: Do not translate USERNAME, URL_DELETE, SITE_NAME: those are placeholders. */
 	$content = __( "Howdy ###USERNAME###,
 
 You recently clicked the 'Delete Site' link on your site and filled in a
diff --git a/wp-includes/ms-functions.php b/wp-includes/ms-functions.php
index 6dbcf086d8..43873cabc4 100644
--- a/wp-includes/ms-functions.php
+++ b/wp-includes/ms-functions.php
@@ -1433,7 +1433,8 @@ function wpmu_welcome_notification( $blog_id, $user_id, $password, $title, $meta
 		return false;
 
 	$welcome_email = get_site_option( 'welcome_email' );
-	if ( $welcome_email == false )
+	if ( $welcome_email == false ) {
+		/* translators: Do not translate USERNAME, SITE_NAME, BLOG_URL, PASSWORD: those are placeholders. */
 		$welcome_email = __( 'Howdy USERNAME,
 
 Your new SITE_NAME site has been successfully set up at:
@@ -1448,6 +1449,7 @@ Log in here: BLOG_URLwp-login.php
 We hope you enjoy your new site. Thanks!
 
 --The Team @ SITE_NAME' );
+	}
 
 	$url = get_blogaddress_by_id($blog_id);
 	$user = get_userdata( $user_id );
@@ -2080,6 +2082,8 @@ function users_can_register_signup_filter() {
 function welcome_user_msg_filter( $text ) {
 	if ( !$text ) {
 		remove_filter( 'site_option_welcome_user_email', 'welcome_user_msg_filter' );
+
+		/* translators: Do not translate USERNAME, PASSWORD, LOGINLINK, SITE_NAME: those are placeholders. */
 		$text = __( 'Howdy USERNAME,
 
 Your new account is set up.
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 1cff4f1d6f..173434b6d3 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.3-alpha-32379';
+$wp_version = '4.3-alpha-32381';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.