You can usa email database and should have management services which will help you in effective campaign. Doctor email list should have a help desk or an active message board where customer can submit any question regarding your service. When you usa email database you have to ensure that your email campaigns are protected by the best and latest in anti-spam and delivery technology. You must have built in mechanisms that can check whether or not your email message will appear to be spam. This will help you a lot when you are sending out promotional emails on a consistent basis. As an internet or affiliate marketer sooner or later or right from beginning you would like to embark your email campaign. And if you don’t have usa email database you’ll try to find for a shortcut, you search online and get several companies who will boast that they have one of the biggest mailing list already available all you have to do is pay them and they will send your promotional emails to their list. Now I want to make clear why you should not do this mistake of purchasing that kinda service.