It’s almost like we need a semantic level where the developer says “I want to send the use this small transient text message” and then a presentation level where a user can decide which method of presenting this information works best for them…
Then write mail rules. It's really easy and personally I couldn't survive at work without them. That's a big part of why it's nice: You can choose how it works unlike practically everything else these days.
That ties the app to be usable only with network access (which is fine for, e.g., Youtube, but not for all apps!), and also includes a highly variable lag.
