Live Tile is a feature that many Windows App uses to display information on the Start Menu. The built-in Mail and Calendar app of Windows 10 uses Live Tile to display summaries of new, unread emails.
This is actually a greatly convenient feature, especially when many other apps supports its. Opening start menu is like opening a notification center.
Sorry I could not provide any information on the implementation. I have absolutely no knowledge how electron app could implement that. Only suggesting from the perspective of a user.
Thank you very much.
(Originally posted by PowerSnail on GitHub.)