If making new e-mails just for registering at websites or avoiding spammers is becoming tedious, disposable email ids can be quite convenient.
One popular service for the same is 10 Minute Mail.
Simply going to the site will generate a random email address that is valid for next 10 minutes and after which it stops working. To extend the time period, click the “Give me 10 more minutes” link.
This is a good way to reduce clutter in your primary email inbox and to maintain privacy by avoiding spam or unwanted emails.