That’s the main reason why I’m using one-way emails, to signup at websites that force you to signup before you can access information. Most disposable emails are not risk free especially if you use them to signup at a service that you do use regularly. If someone were to discover your email he would be able to access the account at the website of the disposable email service. They are free for everyone, remember ? He could request a new password for the website and hack your account for instance.

The following list contains only those one-way email services that I do use regularly for all kinds of purposes. All are free to be used and require no registration whatsoever.

Blockfilter – You can create a email @newsups.com. All incoming emails are deleted after 2 hours automatically.

Guerrilla mail – create a random email on the fly that lasts for 15 minutes. You can extend that period for additional periods.

Mailinator – probably the most popular disposable email website. Offers some alternate domain names that redirect mails to the same mailbox. Great if the original mailinator url is banned from a site.

I know that the list is a bit short but these are all that I do use regularly.

You could try the BugMeNot Service that lets you seek for free logins to websites, you receive logins to sites like nytimes.com or imdb.com. The BugMeNot database does not contain logins to pay sites which is understandable, it´s main purpose is to give you access to free content without the need to register to the site you visit. You can use this bookmarklet that displays a login to the current website if one exists or this firefox extension if you are using firefox.