Job: VIP Sync Discord

I want a system that automatically tells VIP users ingame that didn't claim their vip yet: "Hey claim your VIP on our discord ! blah blah blah". They would get a key ingame and !redeem it on the Discord Bot in PM or in a Channel. Both will need to be connected to some kind of database to make sure people are not abusing the feature.

P.S I don't mind using another way to put users VIP, as long it's fairly easy to use for everyone.