I really don't think a game company is required to holding their own player's hands at micro level.
Your in-game asset is your own responsibility.
We are in the age of smart phone and I am pretty sure this statement "I didn't see this warning email" is a valid excuse any more.
I am pretty sure IOS (Not sure about android, but I assume it is the same) will let you filter email as VIP email to be show on main smartphone screen as notification.
I personally got this notification myself and log on to get rid off my house demolition timer once because I was away for a vacation.
Try to use this function maybe for future occurance.