Email marketing is one of the most powerful and cost-effective methods for driving sales. Email newsletters help to grow and maintain relationships, and keep your company visible, even during times when people aren't actively making purchasing decisions.

A 2015 HubSpot study reveals that companies using email to nurture leads generate 50% more sales-ready leads, and email-nurtured leads, on average, produce a 20% increase in sales opportunities compared to non-nurtured leads.