It's not the same though. The main difference is digital scarcity. Bitcoins are digitally scarce. Emails are not. That's partly why bitcoins are valuable and emails are not.

I'll give you an example of digital scarcity that you might understand better.

Think about Google. They are basically a digital marketing company. They sell ads to people and companies. But what are they actually selling?, the first result of the list that is returned when you're looking for something.

That's digital scarcity. There can only be one top result when you search for something at google. Result number 203 is not as valuable as result 5, and the first result is the most valuable. They're all digital things that Google can sell to people, with the top result being the most scarce, and the most valuable.

Now, Google top result shows digital scarcity, just like Bitcoin. But Google results are centralized. Bitcoin is decentralized, but that's another story.

The point is that I'm sure you now understand that digital scarcity exists and it's valuable. That's partly why Bitcoin is being traded for money now.