If you've ever bought anything online you know that there's no such thing as a simple, one-time transaction. Once you give an online retailer your email address there's a good chance you'll continue to get emails letting you know about other items the company would like you to buy, coupons, or sales until the day you die (or opt out of these email messages, whichever comes first). And that's if you're lucky. There's also a chance that your email address will be sold to marketers and you'll start getting messages from dozens of companies you've never done business with at all.

There are a bunch of services that provide you with disposable email addresses that disappear after a few hours or days. You can use these services to create a temporary email address to sign up for a new web service or purchase an item online. But you need to sign up over and over again every time you need an email address. OtherInbox simplifies the process by letting you register for a single account which comes with a virtually unlimited number of email addresses.

Here's how it works. You register for a free account and you're assigned a custom domain like username.otherinbox.com. Any time an email is sent to any address ending with @username.otherinbox.com it will show up in your inbox. Messages will automatically be sorted into folders based on the address they're sent to.