How Temporary Email Works Echo

We have all been there. You want to download a white paper, access a forum thread, or test a new app, and the site asks for your email address. You type in your real address, and within days your inbox fills with newsletters, promotions, and sometimes worse. That is where a disposable email address comes in. It gives you a throwaway inbox that handles the message and then disappears. But what is actually happening under the hood when you use one of these services? Let us wal