I've often thought an authenticated proof of donation to a global charity could be a solution to these types of problems, scaled in price to the senders locale.
Not refundable, but at least a donation to UNICEF allows the receiver to impose a submission cost without the implication they are doing so out of greed.
Not refundable, but at least a donation to UNICEF allows the receiver to impose a submission cost without the implication they are doing so out of greed.