This is mainly for other Swiss DEs and for frequent travellers to Switzerland but will interest anyone who might be coming here soon and has read, in the past, about the SBB Baggage Service.
The SBB changed (some weeks ago) the part of their site dealing with baggage and there is now a handy "calculator" which tells you when to bring your baggage to the station and when you can pick it up at the destination, or, in the case of Airport and "Check in at the station" which flights or which airlines do NOT use the system...
Whereas before the rule was "in before 0900, collect after 1800" for ALL stations in the Fast Baggage programme there is now a station specific drop down box that tells you precisely by when you must drop it and after when you can collect it. And there are some very important changes! For example, sending bags from Interlaken to Zermatt - bags only need to be at the station by 1030. In other cases instead of getting your bags the same day they will not be there till the day after - which is a significant change in what used to be done.
So before travelling check the precise times!