But notifications do not actually download messages. This means that pressing a notification opens the app, but shows a blank page for a second or two while downloading the message. This was annoying enough that I stopped using their mobile app for a native client.
Dang, that's annoying— you'd think pre-downloading pushed emails would have been a standard feature for like the past twenty years, given how Mike Lazaridis used to talk about that in speeches and keynotes as one of his, like, critical insights when directing the engineering of the original BlackBerry units, like "hey guys, what if we waited to buzz the device until the message was fully downloaded and actually ready to read?"