Sometimes Command+Click will open in a new tab when Middle Click doesn't work, and sometimes Middle Click will open in a new tab when Command+Click won't work.
If you're using Gmail, you get both types of behavior on the same page!
If you're using Gmail, you get both types of behavior on the same page!
If your mouse has a scroll-wheel, then it's probably clickable as a middle-click. If you have a trackpad without a 3rd button then there is usually a gesture that will send a middle click.