I don’t mean to be a bother, but doesn’t it seem like it’s time to un-pin this announcement? It’s been up for a while now…
I’ve subscribed to his channel, and my phone and laptop goes off whenever he posts another video. He provides good, honest content.
I was never aware of this until now. Now I know! The more you know sound plays… 
Whenever you have some time, maybe around 3~4 weeks of time, I would suggest building one. In the end, you feel like you created your own webmail service, like Google and Outlook. At least, that’s what it felt like for me! 