You do not have a real way of verifying that the owners of these email addresses even want your email to be received. For more details click Houston Email list. They were opt-in emails or were simply collected through the use of software used to crawl email addresses from the web. Your email would be spam if that is the case and would be against the anti-spam laws in most countries. Are these messages even remotely relevant to your organisation? How can you guarantee that customers who are interested in what you have to offer will receive your email campaign? At face value, you can only take the service and accept what they are saying to you. You have no way to prove the effectiveness of the campaign until you have already paid for the service after the fact and at that time. This service might very well be for you if your offer is very generic. If your main concern is to just get your offer in front of as many individuals as possible and make enough sales to make it a profitable undertaking, based on averages. There is a price involved in buying or renting email lists here. These costs can vary between $300 for 10,000 and $1,000 for 1,000,000 or more emails. If you are sure that your copywriting is very compelling and that your CTR has been extremely high, the cost may outweigh the advantages for you. There is nothing guaranteed, however. The organisation can guarantee distribution, but they cannot guarantee outcomes. Textual email list is obtained by potential customers visiting your website, articles, squeeze page and choosing to opt-in to your email list, usually through the use of a lead capture page. This can be because you are offering an incentive, such as a free report of information, consultation, or a mini-course email. There would be an opt-in form for the lead capture page where the visitor would enter their name and email address.