I agree with englishal and dublinpilot, but I don't think the State is going to do anything. I've talked to a number of policemen who agreed that a website (feeding the data directly to them) would be great, but they can't see it happening.
I reckon a commercial service, emailing back a confirmation of the [un]delivered fax, would be OK. In fact one could display the delivery status on the website used to enter the data in the first place - the sender would just have to sit around for a minute or so. Just like when filing a flight plan via homebriefing.com really.
As regards airlines, I do know they feed the passenger data to the security people somehow, in bulk, well in advance, so when the plane lands the Plod can be there waiting. There is some kind of datalink.