Website/app that notifies you when a wallet receives funds.

I have many wallets on an exchange that I use for receiving payments, I used to use blockonomics website which would send an email when any Bitcoin address you entered in had activity but they've just disabled this feature.

So I am looking for a replacement, all I need is a notification (app/email, whatever) that "wallet btc1gtsfj received 0.000356BTC"

Preferences: Near instant (at least not too delayed) Near free (I don't mind paying a bit but $14/mo is too much) Working with LTC as well as btc would be nice.