Role Based customer emails v1.7

I am trying to send out customer order confirmations based on the customer's role.

For example, all customers receive the emails but only those capable of viewing pricing will have emails with pricing info.

Something like: Membership.GetUser().IsInRole("ShowPrice")

I use Page.User.IsInRole... within codebehinds but how would I achieve the same within MessageManager.cs?
What should I call to use the NOP membership provider?

Thanks in advance

StoreRoleProvider srp = new StoreRoleProvider();
                
                if ( srp.GetRolesForUser(customer email).Contains("ShowPrice"))
                
{...}

Am I close?  If so, how would I get the username?  Does it matter if my nop uses email addresses instead of usernames?