If only there were some way to look this up:
America is 75% christian, and given how feral and out-of-countrol some of the groups are, I'd say they're fair game.
Apparently the NSA agreed with you.
I'd take Outlook in a second over Notes.
I'd take PINE over either. And I don't even like PINE.
Promising costs nothing, it's the delivering that kills you.