As a web developer, it is sometime needed to test email notifications in a local environment, either error notifications or emails for end clients, without the emails going near their intended recipients.
That’s where Papercut comes in. A dead simple SMTP server running on your local machine on port 25 that you can point your web application to, it acknowledges receipt of the email (so the web application is happy) and provides a simple GUI for you to be able to see the emails. It is a Windows-based tool, compatible with Windows 8 and is free to use.
For more info, visit the app site at http://papercut.codeplex.com/.
Computer Ramblings 