I was speaking with some co-workers earlier this week, and someone mentioned you own all variations of your Gmail email address that contain different period placements. This means that if you register email@example.com, you also own firstname.lastname@example.org, email@example.com, and firstname.lastname@example.org. You can verify this two ways. First, you can log in to Gmail using any of these variations; it will still take you to the same inbox you’re used to seeing. Second, you can send an email to any of these variations, and you’ll receive it just like you’d expect.
The usefulness of this is questionable, but I still thought it was fun and interesting to know. And maybe you wished you could make your gmail more specific (for example, email@example.com could use ny.canal@gmail just so there’s no confusion).
This reminded me of another interesting trick that you can do with your Gmail account. Google let’s you append “+” and text to your email address. I love using this when registering for different things. When the email comes in, the tag will be included. So, if you starting getting spam in your inbox sent to firstname.lastname@example.org, you’ll know where they got your email address. More importantly, you can easily set up an email filter for messages sent to that address so you don’t need to worry about them anymore. The same is true for the period-placement variations, too; you’ll receive the emails with the To line containing the address they were sent to, so you can filter or what-not as you please.