I am only a "hobbyist" computer programmer but surely it should be possible for
FGW▸ to be more selective with their emails.
A few days ago I booked a train ticket via their website.
Today I got an email reminding me the journey is tomorrow - fair enough.
However it then went on to remind me about First Class and complimentary refreshments - I bought a standard ticket.
..and the icing on the cake? Pullman Restaurants are available on selected trains from London Paddington. Great - I bought a standard off-peak return from Reading to Twyford - a journey that takes all of 7 minutes!