Email is a cost-effective way to tell existing and potential customers about offers, to respond to queries and provide customer support. Email messages can be used to highlight special offers and new products and can help drive traffic to your website.
Email marketing has the benefit of lower costs and higher response rates than traditional marketing mailings. It is also easy to track responses so that you can easily test what works.
However, you need to look for a reliable provider who understands your needs and guarantees email to be delivered to inbox and not to spam folders. Email providers like Google have strict filters to avoid spam.