A little known but extra interesting/cool feature of Gmail is the you don’t need to put the “.” in the address for the email to be successfully delivered. Try it.
Gmail has also recently started to rollout inbox tabs, much to the chagrin of email markets everywhere.
Why I’m Curious
I’m constantly intrigued how much detail Google puts into it’s products. A quick search of Little Big Details (one of the best websites, ever) will show you the breadth and depth of Google’s commitment to a great User Experience.
The email marketing community is also watching Gmail’s new tabs with nervous anticipation to see how they effect open rates. It will be interesting to see how that plays out and how they adjust tactics.