I don't know all their transactional email strategies, but I've noticed one is those "Do you know [name] or [name]" emails that try to coax you back onto Facebo

I don't know all their transactional email strategies, but I've noticed one is those "Do you know [name] or [name]" emails that try to coax you back onto Facebook by asking you if you know certain people and want to friend them.