Promotional email is an email that is sent to subscribers to incease sales.  Limited-time offer emails, product launch emails, sales promotion emails are all different types of promotional emails aiming at driving sales and managing customer relationships.  

You can send promotional emails to your subscribers to covert them to regular buyers much to your satisfaction.  Writing promotional emails is an art by itself.  Discounts and coupons are the nucleus of promotional emails.  By giving coupons and discounts, you will be on the way to building your business brand.