diff --git a/_locales/en/messages.json b/_locales/en/messages.json
index 219f346e3..6e5c79bbd 100644
--- a/_locales/en/messages.json
+++ b/_locales/en/messages.json
@@ -238,5 +238,9 @@
"restartSignal": {
"message": "Restart Signal",
"description": "Menu item for restarting the program."
+ },
+ "messageNotSent": {
+ "message": "Message not sent.",
+ "description": "Informational label, appears on messages that failed to send"
}
}
diff --git a/background.html b/background.html
index a7396aba7..0b4f68955 100644
--- a/background.html
+++ b/background.html
@@ -110,6 +110,10 @@