How to add a sender email address to the address book?
 

I can't find this option in the current interface. Was it removed or just relocated to another place on the screen?

Thanks!

When viewing a message click Show Details which is next to the To address. Then click on the From address. That will present an Add to Contacts button.

I haven't found a keyboard shortcut that will do this.

Thank you, this is very helpful.

I wonder how many other Easter eggs are hidden in this interface?

If you have a question the experts here (not me) can usually answer it for you.

Just clicking the name works. You don’t need to first click show details.