People (or bots) have sent other players malicious gold, so thiis unfortunately has happened to some. While it doesn’t mean that it’s going to 100% safeguard you, the best practice is to report it immediately. Of course, it’s a good idea to be mindful of the mail you’re accepting, but that doesn’t always happen.
By reporting it immediately, that helps to create a “paper trail,” as it were. If for some reason you do get sanctioned for it, then you can point back to ticket where you reported it and were trying to address the situation once you discovered it. A recent case had a GM able to go in and remove the gold from the unsuspecting player’s inventory.
