You need an email server which can send your emails to your targeted people. At first setup this server and prepare for send emails. After do that you need the most important thing which email databases. Without email database you can not send emails. You need a lots of emails to upload into your server. You will send your messages with those emails. In an email lists you will get lots of emails together. You will get some other information with emails like phone, fax, name, company names, country, state, city, zip, website, ip address, date etc. But you need to know about the accuracy of lists emails. Without proper emails you can not send your offer to right people.