Sometimes people don't know why they would ever use a temporary email address. Why should I even care to read the rest of this article? Short answer: You want to keep people out of your business.
First off, a temporary email address is an email address that you can use just like a regular email address. There's nothing different about how you use it. You can use it to receive email from anyone. But if it's the same how is it different?
When you use a temporary email address, also known as a temp email address, you prevent others from knowing your actual day-to-day, I pay my bills with email address. When you use your personal email address companies learn a lot about you. For instance, if you use gmail, yahoo or Microsoft, they can scan your email contents and show you relevant ads. They store this information about you and create a profile of your interests, fears, concerns, habits and likes.
By using a temp email address, like EmailOnDeck.com, people or companies that send you emails go to your temp address. You are not associated with your temp email address. There's no "personal profile" to create that tracks anything.
But what if I don't have anything to hide? It doesn't matter... If you don't have anything to hide in your wallet, purse or clothes drawers, does that mean you just open it up to show people? Of course not.
If you really don't care about other people and companies tracking your online habits, interests, and personal info then a temporary email address is not for you. But if you do care, and you're not sure of the company you're dealing with, give temporary email address a try.