Email distribution lists come in all types of forms. From manual collection from an customer giveaway, to email addresses provided at customer check, and yes… Some emails are even purchased in bulk, or scraped by contractors from service directories and web pages.
But, and email distribution list is only as good as the contacts in it, and the content you produce to send them in their emails. Why is it important to have a clean email distribution list? It helps reduce bounce rates, increases open rates, keeps you from getting flagged by ISP’s and other email service providers.