Today (and it's not the first time I've observed this), Tim and I suspended and sent a moderator message to the same user within one second of each other.
Could the user messaging/suspension moderator tools be modified to warn us if a new moderator action has been taken against a user within something like the last 5-10 minutes? It doesn't necessarily need to stop us from sending the message, but just pop up a warning so we can go and have a look before hitting the notify button.
Otherwise it looks like we're harassing a user and doesn't seem very professional.