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…
>But I don't want so many mails in my inbox
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.