A new, free email service offered by Google, giving users 1GB of storage space, email search and conversation threading. Gmail also uses technology to add advertisements next to messages containing keywords that match of those advertisers in its AdWords program, a policy that means promotional materials sent by one company could carry text ads of its competitors.

The 3 Things To Avoid When Emailing Your List
When you decide to have an opt-in list, it is not just a matter of sending your subscribers your promotional newsletters or catalogs.