"Can someone explain why a throw-away email service such as Guerrilla Mail has to go offline as a result of law enforcement?" It doesn't. Guerrilla Mail could

"Can someone explain why a throw-away email service such as Guerrilla Mail has to go offline as a result of law enforcement?" It doesn't. Guerrilla Mail could very easily (and relatively cheaply) house their own infrastructure (a single 1U server ?) in their own rack and self provide their hosting. The takedown notices would go to them. Subpoenas would go to them. They would be served and have great leeway in deciding how to respond and what information to share. Further, placing the entire operation inside a corporate entity would insulate the owners and allow them to slow down the entire legal/notice/response process. You do not have to rely on intermediary providers to publish your website.