All the commercial activities carried out by anyone for the purpose of generating sales, increase business lead, spreading brand awarness, boosting product portfolio through commercial mail can be defined as Email Promotion. But it is not that much easy. You may be thinking that you will get mail list from somewhere and sending the bulk mail through any type of bulk email service provider and you will get done your email promotion. If you are considering this process, you will never get encouraging results. And after repeated failure, probably you will say that mail is not worthy as far as promotional aspect is concern. Some other aspects also be taken care in email promotion. You may be thinking that email marketing can be done in large number of group people. It is absolutely wrong. You may send the mail to your existing client to retain and nurturing them. It is also one type of email marketing. Because you are sending your mail for specific commercial purposes. So email marketing can be used at every level of sales and promotion journey from the prospective client to conversion of that client and from conversion to existing client. In every stage you need email marketing. But you need different type of strategy and mail content for each stage. You have to take care your mail should be permission based. If you are sending the mails without the permission of the receivers then you may be in trouble. You must have permission to send the mails. Therefore paid mail list is not appropriate for mails. You have to create your own mailing list via paid advertisements, website visit, mobile promotion, enabling cookies policy in your websites, etc. So you have to be very cautious before sending the mails.