SPAM!

[DoctorPepper]

I agree with the OP, there should be options for who can send you tells. That would completely solve this spam issue and with very little work on the devs side I would imagine since chat filters are already in place as it is. I don't think that telling the OP to just deal with it and report them will solve the issue at all. I've seen this suggested before and it still makes the most sense to me.

[Kes]

A level requirement minimum option/checkbox is a brilliant idea. I think you're right, that client-side filter would solve the majority of tells from gil-sellers in the game.