I have a few thoughts/suggestions for the email notifications.
1/ Can we have the choice of text vs html?
2/ Option to include a mini board of current position?
3/ Option to specify which sub-site the email comes from (I use chessatwork; notifications come from RHP) and which site the included link should go back to (either a choice of main sites or mobile site)
4/ Option to indicate if a conditional move matched, which one, and that it's not my turn to move after all.
None of these are urgent, but they'd make the notifications a lot more useful for me.