I too dumped wanadoo/orange after being messed about so much I thought I was pregnant!
I too was told that the email would still be valid, however, within ten days all sorts of weird problems occurred.
Frankly, I think orange lied throughout their conversations with me. Every single query was met with a standard list of 'suggestions' all of which pointed towards faults with my equipment.
Curiously enough having moved to o2 I have yet to experience any problems. The line speed problems that restricted my orange connection to .2 or .3 vanished too and I get 2.5 Mbps. The dropped connections have gone and yes, the emails come through.
Orange is rubbish, simples.