Advertising is best done through communication tools because if any message is communicated well to people, then only its purpose can be fulfilled. This communication could be done via any media means through various platforms. For example, SMS advertising could be done through mobile phones and people could be made aware of the campaigns.
Firstly, profiling of the users is done on the basis of their interests, gender, age and other details. According to the need of the campaign, the target audience is selected and bulk messaging is done. However, many times correct profiling is not possible and in that case, everyone could receive the messages. But the purpose is still fulfilled because only those who are interested would respond.