I don't understand how some websites (LinkedIn, Youtube, Houzz, ...) have their favicon to show in Google Inbox. It is awesome! How come mine does not show? First I thought I had to put a favicon.ico in my public root folder... But I found out I already have.
So, what would allow me to have my favicon display instead of the colored circled letter in Gmail / Inbox (or other apps) ?
Thank you all!