For better viewing try http://www.testalways.com/extra/2012-08-28_2148.swf

I have here an example how I can use Fiddler to replay a submission on a web form. I isolate the exact HTTP request and I execute it again.

The server in this case is responding positively and it’s sending an email each time.

Replaying HTTP requests can be useful not only to receive a confirmation email back, but has other various utilities.

You can repeat (if there isn’t a protection blocking mechanism of course):

-creating a post on a forum

-creating a new thread

-sending reset password emails

etc…

Fiddler can be used to decrypt locally the HTTPS traffic, but for many types of spamming.

I use it successfully in some cases for Load Testing and when I overloaded the server I got error pages with sensitive information, so I found security issues in this way.

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