Hi. I'd like to track how many seats are remaining on a particular flight departing a particular day, in Economy. This is a revenue ticket, not an award trip. Is there any tool that will ping me when inventory changes? Can this be done with the free version? (it appears not as the Seat Alert doesn't seem to apply). I'm looking for some alternative to having to constantly log into the carrier's website with credentials, and clicking through various stages before seeing a diagram of seating availability.

For example, is there a feature that will email me every time a seat is sold in Economy, and confirm how many Economy seats remain?

Thanks.