Just to pick up on one of your examples: > When I order something I like getting the emails saying 'your package has been shipped...", and they typically come

Just to pick up on one of your examples: > When I order something I like getting the emails saying 'your package has been shipped...", and they typically come from a donotreply address. I almost never want to reply to these. On the rare occasion when there’s a problem with the shipment, however, replying to this email feels like the right thing to do.