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This is part II of a series of articles in which we'll learn how to send mass e-mails ( both text and HTML ) to a list of subscribers using ASP.NET. We'll also learn what are validation controls and how they can help us validate user input.

This code demonstrates how to use an MD5 hash to encrypt user passwords when storing them in a database. There are constantly news items about companies where user information is compromised. By storing passwords using an MD5 hash, even if your database is compromised the passwords cannot be decoded. The only downside is that users cannot retrieve lost passwords, they must reset them.