Automating notifications to merit sources may also be a good idea as was suggested above by Welsh. Sources could set their own criteria as to who they are willing to receive notifications from.
Without setting up Telegram/ PM/ smart watches, notifications would likely be seen in the Epochtalk ʷᵉ ᵐⁱᵍʰᵗ ˢᵉᵉ ⁱᵗ, ʷᵉ ᵐⁱᵍʰᵗ ⁿᵒᵗ. ʰᵒᵖᵉᶠᵘˡˡʸ ᵇⁱᵗᶜᵒⁱⁿ ʷᵒᵘˡᵈ ˢᵗⁱˡˡ ᵇᵉ ʳᵉˡᵉᵛᵃⁿᵗ ᵇʸ ᵗʰᵉⁿ
Moderators get notifications of reports via a queue that is very similar to PMs. I don't think many people use this, but it is also possible to get a popup window when you receive a PM. Either of these could be implemented for merit sources.