While we are searching for some information in internet or just read something on certain website, we often can see that one of site functions is option to sign up for newsletters. It is very interesting opportunity to stay in touch with website actualizations and news but is this the only newsletter secret? Probably, the most important about newsletter is that it is very useful not only for the site visitor but especially for website administrator. Thanks to interesting and worthy newsletters, owner of this function has great occasion to propose for potential clients new services or products which could be interesting for readers of certain website. For example, if someone likes to read website about volleyball and he will sign up for newsletter he probably will be interested in some information about tickets for volleyball events or gadgets like balls, club shirts or sport shoes. That show very closely that newsletters, most of all, are great tools and ideas for business. Every smart website owner or internet shop boss can make his profits bigger and more satisfying if he would prepare attractive newsletter for his site visitors.