1) Very happy mozilla made one of their own of these. 2) I've had issues where it blocks the entry of any text into an email fill box, specifically on pay dot instamed dot com, so the extension had to be disabled, but the core service worked well 3) I think it needs to be more clear when blocking or forwarding is active 4) I'd like to see "forward for 30 days then block" or actually 5) "forward for 30 days to primary address, then switch to secondary address" so that blocked emails aren't permanently deleted, just in case.