The best welcome emails contain two things -- the nuts and bolts information a user needs to login, and some marketing and benefit copy to entice them to use your site. This welcome email from Demand Metric is a great example of how B2B sites can create simple but elegant welcome emails without the expense or hassle of HTML or fancy graphics. We especially like how the site recommends three distinct actions for first steps. The only suggestion we have is to include a user's password along with t...